mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-29 17:25:38 +00:00
v6.2 second rc pull request
- Several hfi1 patches fixing some long standing driver bugs - Overflow when working with sg lists with elements greater than 4G - An rxe regression with object numbering after the mrs reach their limit - A theoretical problem with the scatterlist merging code -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRRRCHOFoQz/8F5bUaFwuHvBreFYQUCY8sBzAAKCRCFwuHvBreF YWMBAP92rk8L3oLrNbYTryNTv8w/LicLhmAvhC42KRy8klvFkAD6A+wskhxmHMgO aSdznob6peMEyNONZUKcijqjnSXhyAY= =brq4 -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma Pull rdma fixes from Jason Gunthorpe: - Several hfi1 patches fixing some long standing driver bugs - Overflow when working with sg lists with elements greater than 4G - An rxe regression with object numbering after the mrs reach their limit - A theoretical problem with the scatterlist merging code * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: lib/scatterlist: Fix to calculate the last_pg properly IB/hfi1: Remove user expected buffer invalidate race IB/hfi1: Immediately remove invalid memory from hardware IB/hfi1: Fix expected receive setup error exit issues IB/hfi1: Reserve user expected TIDs IB/hfi1: Reject a zero-length user expected buffer RDMA/core: Fix ib block iterator counter overflow RDMA/rxe: Prevent faulty rkey generation RDMA/rxe: Fix inaccurate constants in rxe_type_info
This commit is contained in:
Linus Torvalds
commit
8974efaa33
@ -2957,15 +2957,18 @@ EXPORT_SYMBOL(__rdma_block_iter_start);
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bool __rdma_block_iter_next(struct ib_block_iter *biter)
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{
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unsigned int block_offset;
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unsigned int sg_delta;
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if (!biter->__sg_nents || !biter->__sg)
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return false;
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biter->__dma_addr = sg_dma_address(biter->__sg) + biter->__sg_advance;
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block_offset = biter->__dma_addr & (BIT_ULL(biter->__pg_bit) - 1);
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biter->__sg_advance += BIT_ULL(biter->__pg_bit) - block_offset;
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sg_delta = BIT_ULL(biter->__pg_bit) - block_offset;
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if (biter->__sg_advance >= sg_dma_len(biter->__sg)) {
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if (sg_dma_len(biter->__sg) - biter->__sg_advance > sg_delta) {
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biter->__sg_advance += sg_delta;
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} else {
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biter->__sg_advance = 0;
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biter->__sg = sg_next(biter->__sg);
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biter->__sg_nents--;
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@ -23,18 +23,25 @@ static void cacheless_tid_rb_remove(struct hfi1_filedata *fdata,
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static bool tid_rb_invalidate(struct mmu_interval_notifier *mni,
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const struct mmu_notifier_range *range,
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unsigned long cur_seq);
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static bool tid_cover_invalidate(struct mmu_interval_notifier *mni,
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const struct mmu_notifier_range *range,
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unsigned long cur_seq);
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static int program_rcvarray(struct hfi1_filedata *fd, struct tid_user_buf *,
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struct tid_group *grp,
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unsigned int start, u16 count,
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u32 *tidlist, unsigned int *tididx,
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unsigned int *pmapped);
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static int unprogram_rcvarray(struct hfi1_filedata *fd, u32 tidinfo,
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struct tid_group **grp);
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static int unprogram_rcvarray(struct hfi1_filedata *fd, u32 tidinfo);
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static void __clear_tid_node(struct hfi1_filedata *fd,
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struct tid_rb_node *node);
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static void clear_tid_node(struct hfi1_filedata *fd, struct tid_rb_node *node);
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static const struct mmu_interval_notifier_ops tid_mn_ops = {
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.invalidate = tid_rb_invalidate,
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};
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static const struct mmu_interval_notifier_ops tid_cover_ops = {
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.invalidate = tid_cover_invalidate,
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};
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/*
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* Initialize context and file private data needed for Expected
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@ -253,53 +260,65 @@ int hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd,
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tididx = 0, mapped, mapped_pages = 0;
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u32 *tidlist = NULL;
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struct tid_user_buf *tidbuf;
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unsigned long mmu_seq = 0;
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if (!PAGE_ALIGNED(tinfo->vaddr))
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return -EINVAL;
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if (tinfo->length == 0)
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return -EINVAL;
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tidbuf = kzalloc(sizeof(*tidbuf), GFP_KERNEL);
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if (!tidbuf)
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return -ENOMEM;
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mutex_init(&tidbuf->cover_mutex);
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tidbuf->vaddr = tinfo->vaddr;
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tidbuf->length = tinfo->length;
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tidbuf->psets = kcalloc(uctxt->expected_count, sizeof(*tidbuf->psets),
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GFP_KERNEL);
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if (!tidbuf->psets) {
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kfree(tidbuf);
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return -ENOMEM;
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ret = -ENOMEM;
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goto fail_release_mem;
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}
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if (fd->use_mn) {
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ret = mmu_interval_notifier_insert(
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&tidbuf->notifier, current->mm,
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tidbuf->vaddr, tidbuf->npages * PAGE_SIZE,
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&tid_cover_ops);
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if (ret)
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goto fail_release_mem;
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mmu_seq = mmu_interval_read_begin(&tidbuf->notifier);
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}
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pinned = pin_rcv_pages(fd, tidbuf);
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if (pinned <= 0) {
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kfree(tidbuf->psets);
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kfree(tidbuf);
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return pinned;
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ret = (pinned < 0) ? pinned : -ENOSPC;
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goto fail_unpin;
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}
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/* Find sets of physically contiguous pages */
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tidbuf->n_psets = find_phys_blocks(tidbuf, pinned);
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/*
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* We don't need to access this under a lock since tid_used is per
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* process and the same process cannot be in hfi1_user_exp_rcv_clear()
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* and hfi1_user_exp_rcv_setup() at the same time.
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*/
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/* Reserve the number of expected tids to be used. */
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spin_lock(&fd->tid_lock);
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if (fd->tid_used + tidbuf->n_psets > fd->tid_limit)
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pageset_count = fd->tid_limit - fd->tid_used;
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else
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pageset_count = tidbuf->n_psets;
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fd->tid_used += pageset_count;
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spin_unlock(&fd->tid_lock);
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if (!pageset_count)
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goto bail;
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if (!pageset_count) {
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ret = -ENOSPC;
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goto fail_unreserve;
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}
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ngroups = pageset_count / dd->rcv_entries.group_size;
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tidlist = kcalloc(pageset_count, sizeof(*tidlist), GFP_KERNEL);
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if (!tidlist) {
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ret = -ENOMEM;
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goto nomem;
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goto fail_unreserve;
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}
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tididx = 0;
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@ -395,43 +414,78 @@ int hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd,
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}
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unlock:
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mutex_unlock(&uctxt->exp_mutex);
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nomem:
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hfi1_cdbg(TID, "total mapped: tidpairs:%u pages:%u (%d)", tididx,
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mapped_pages, ret);
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if (tididx) {
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spin_lock(&fd->tid_lock);
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fd->tid_used += tididx;
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spin_unlock(&fd->tid_lock);
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tinfo->tidcnt = tididx;
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tinfo->length = mapped_pages * PAGE_SIZE;
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if (copy_to_user(u64_to_user_ptr(tinfo->tidlist),
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tidlist, sizeof(tidlist[0]) * tididx)) {
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/*
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* On failure to copy to the user level, we need to undo
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* everything done so far so we don't leak resources.
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*/
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tinfo->tidlist = (unsigned long)&tidlist;
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hfi1_user_exp_rcv_clear(fd, tinfo);
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tinfo->tidlist = 0;
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ret = -EFAULT;
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goto bail;
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/* fail if nothing was programmed, set error if none provided */
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if (tididx == 0) {
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if (ret >= 0)
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ret = -ENOSPC;
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goto fail_unreserve;
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}
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/* adjust reserved tid_used to actual count */
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spin_lock(&fd->tid_lock);
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fd->tid_used -= pageset_count - tididx;
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spin_unlock(&fd->tid_lock);
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/* unpin all pages not covered by a TID */
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unpin_rcv_pages(fd, tidbuf, NULL, mapped_pages, pinned - mapped_pages,
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false);
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if (fd->use_mn) {
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/* check for an invalidate during setup */
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bool fail = false;
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mutex_lock(&tidbuf->cover_mutex);
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fail = mmu_interval_read_retry(&tidbuf->notifier, mmu_seq);
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mutex_unlock(&tidbuf->cover_mutex);
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if (fail) {
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ret = -EBUSY;
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goto fail_unprogram;
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}
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}
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/*
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* If not everything was mapped (due to insufficient RcvArray entries,
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* for example), unpin all unmapped pages so we can pin them nex time.
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*/
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if (mapped_pages != pinned)
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unpin_rcv_pages(fd, tidbuf, NULL, mapped_pages,
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(pinned - mapped_pages), false);
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bail:
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kfree(tidbuf->psets);
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kfree(tidlist);
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tinfo->tidcnt = tididx;
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tinfo->length = mapped_pages * PAGE_SIZE;
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if (copy_to_user(u64_to_user_ptr(tinfo->tidlist),
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tidlist, sizeof(tidlist[0]) * tididx)) {
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ret = -EFAULT;
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goto fail_unprogram;
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}
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if (fd->use_mn)
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mmu_interval_notifier_remove(&tidbuf->notifier);
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kfree(tidbuf->pages);
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kfree(tidbuf->psets);
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kfree(tidbuf);
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return ret > 0 ? 0 : ret;
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kfree(tidlist);
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return 0;
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fail_unprogram:
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/* unprogram, unmap, and unpin all allocated TIDs */
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tinfo->tidlist = (unsigned long)tidlist;
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hfi1_user_exp_rcv_clear(fd, tinfo);
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tinfo->tidlist = 0;
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pinned = 0; /* nothing left to unpin */
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pageset_count = 0; /* nothing left reserved */
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fail_unreserve:
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spin_lock(&fd->tid_lock);
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fd->tid_used -= pageset_count;
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spin_unlock(&fd->tid_lock);
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fail_unpin:
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if (fd->use_mn)
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mmu_interval_notifier_remove(&tidbuf->notifier);
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if (pinned > 0)
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unpin_rcv_pages(fd, tidbuf, NULL, 0, pinned, false);
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fail_release_mem:
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kfree(tidbuf->pages);
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kfree(tidbuf->psets);
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kfree(tidbuf);
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kfree(tidlist);
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return ret;
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}
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int hfi1_user_exp_rcv_clear(struct hfi1_filedata *fd,
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@ -452,7 +506,7 @@ int hfi1_user_exp_rcv_clear(struct hfi1_filedata *fd,
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mutex_lock(&uctxt->exp_mutex);
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for (tididx = 0; tididx < tinfo->tidcnt; tididx++) {
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ret = unprogram_rcvarray(fd, tidinfo[tididx], NULL);
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ret = unprogram_rcvarray(fd, tidinfo[tididx]);
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if (ret) {
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hfi1_cdbg(TID, "Failed to unprogram rcv array %d",
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ret);
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@ -706,6 +760,7 @@ static int set_rcvarray_entry(struct hfi1_filedata *fd,
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}
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node->fdata = fd;
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mutex_init(&node->invalidate_mutex);
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node->phys = page_to_phys(pages[0]);
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node->npages = npages;
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node->rcventry = rcventry;
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@ -721,11 +776,6 @@ static int set_rcvarray_entry(struct hfi1_filedata *fd,
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&tid_mn_ops);
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if (ret)
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goto out_unmap;
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/*
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* FIXME: This is in the wrong order, the notifier should be
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* established before the pages are pinned by pin_rcv_pages.
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*/
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mmu_interval_read_begin(&node->notifier);
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}
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fd->entry_to_rb[node->rcventry - uctxt->expected_base] = node;
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@ -745,8 +795,7 @@ static int set_rcvarray_entry(struct hfi1_filedata *fd,
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return -EFAULT;
|
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}
|
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|
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static int unprogram_rcvarray(struct hfi1_filedata *fd, u32 tidinfo,
|
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struct tid_group **grp)
|
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static int unprogram_rcvarray(struct hfi1_filedata *fd, u32 tidinfo)
|
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{
|
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struct hfi1_ctxtdata *uctxt = fd->uctxt;
|
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struct hfi1_devdata *dd = uctxt->dd;
|
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@ -769,9 +818,6 @@ static int unprogram_rcvarray(struct hfi1_filedata *fd, u32 tidinfo,
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if (!node || node->rcventry != (uctxt->expected_base + rcventry))
|
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return -EBADF;
|
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|
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if (grp)
|
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*grp = node->grp;
|
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|
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if (fd->use_mn)
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mmu_interval_notifier_remove(&node->notifier);
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cacheless_tid_rb_remove(fd, node);
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@ -779,23 +825,34 @@ static int unprogram_rcvarray(struct hfi1_filedata *fd, u32 tidinfo,
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return 0;
|
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}
|
||||
|
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static void clear_tid_node(struct hfi1_filedata *fd, struct tid_rb_node *node)
|
||||
static void __clear_tid_node(struct hfi1_filedata *fd, struct tid_rb_node *node)
|
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{
|
||||
struct hfi1_ctxtdata *uctxt = fd->uctxt;
|
||||
struct hfi1_devdata *dd = uctxt->dd;
|
||||
|
||||
mutex_lock(&node->invalidate_mutex);
|
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if (node->freed)
|
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goto done;
|
||||
node->freed = true;
|
||||
|
||||
trace_hfi1_exp_tid_unreg(uctxt->ctxt, fd->subctxt, node->rcventry,
|
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node->npages,
|
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node->notifier.interval_tree.start, node->phys,
|
||||
node->dma_addr);
|
||||
|
||||
/*
|
||||
* Make sure device has seen the write before we unpin the
|
||||
* pages.
|
||||
*/
|
||||
/* Make sure device has seen the write before pages are unpinned */
|
||||
hfi1_put_tid(dd, node->rcventry, PT_INVALID_FLUSH, 0, 0);
|
||||
|
||||
unpin_rcv_pages(fd, NULL, node, 0, node->npages, true);
|
||||
done:
|
||||
mutex_unlock(&node->invalidate_mutex);
|
||||
}
|
||||
|
||||
static void clear_tid_node(struct hfi1_filedata *fd, struct tid_rb_node *node)
|
||||
{
|
||||
struct hfi1_ctxtdata *uctxt = fd->uctxt;
|
||||
|
||||
__clear_tid_node(fd, node);
|
||||
|
||||
node->grp->used--;
|
||||
node->grp->map &= ~(1 << (node->rcventry - node->grp->base));
|
||||
@ -854,10 +911,16 @@ static bool tid_rb_invalidate(struct mmu_interval_notifier *mni,
|
||||
if (node->freed)
|
||||
return true;
|
||||
|
||||
/* take action only if unmapping */
|
||||
if (range->event != MMU_NOTIFY_UNMAP)
|
||||
return true;
|
||||
|
||||
trace_hfi1_exp_tid_inval(uctxt->ctxt, fdata->subctxt,
|
||||
node->notifier.interval_tree.start,
|
||||
node->rcventry, node->npages, node->dma_addr);
|
||||
node->freed = true;
|
||||
|
||||
/* clear the hardware rcvarray entry */
|
||||
__clear_tid_node(fdata, node);
|
||||
|
||||
spin_lock(&fdata->invalid_lock);
|
||||
if (fdata->invalid_tid_idx < uctxt->expected_count) {
|
||||
@ -887,6 +950,23 @@ static bool tid_rb_invalidate(struct mmu_interval_notifier *mni,
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool tid_cover_invalidate(struct mmu_interval_notifier *mni,
|
||||
const struct mmu_notifier_range *range,
|
||||
unsigned long cur_seq)
|
||||
{
|
||||
struct tid_user_buf *tidbuf =
|
||||
container_of(mni, struct tid_user_buf, notifier);
|
||||
|
||||
/* take action only if unmapping */
|
||||
if (range->event == MMU_NOTIFY_UNMAP) {
|
||||
mutex_lock(&tidbuf->cover_mutex);
|
||||
mmu_interval_set_seq(mni, cur_seq);
|
||||
mutex_unlock(&tidbuf->cover_mutex);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static void cacheless_tid_rb_remove(struct hfi1_filedata *fdata,
|
||||
struct tid_rb_node *tnode)
|
||||
{
|
||||
|
||||
@ -16,6 +16,8 @@ struct tid_pageset {
|
||||
};
|
||||
|
||||
struct tid_user_buf {
|
||||
struct mmu_interval_notifier notifier;
|
||||
struct mutex cover_mutex;
|
||||
unsigned long vaddr;
|
||||
unsigned long length;
|
||||
unsigned int npages;
|
||||
@ -27,6 +29,7 @@ struct tid_user_buf {
|
||||
struct tid_rb_node {
|
||||
struct mmu_interval_notifier notifier;
|
||||
struct hfi1_filedata *fdata;
|
||||
struct mutex invalidate_mutex; /* covers hw removal */
|
||||
unsigned long phys;
|
||||
struct tid_group *grp;
|
||||
u32 rcventry;
|
||||
|
||||
@ -98,11 +98,11 @@ enum rxe_device_param {
|
||||
RXE_MAX_SRQ = DEFAULT_MAX_VALUE - RXE_MIN_SRQ_INDEX,
|
||||
|
||||
RXE_MIN_MR_INDEX = 0x00000001,
|
||||
RXE_MAX_MR_INDEX = DEFAULT_MAX_VALUE,
|
||||
RXE_MAX_MR = DEFAULT_MAX_VALUE - RXE_MIN_MR_INDEX,
|
||||
RXE_MIN_MW_INDEX = 0x00010001,
|
||||
RXE_MAX_MW_INDEX = 0x00020000,
|
||||
RXE_MAX_MW = 0x00001000,
|
||||
RXE_MAX_MR_INDEX = DEFAULT_MAX_VALUE >> 1,
|
||||
RXE_MAX_MR = RXE_MAX_MR_INDEX - RXE_MIN_MR_INDEX,
|
||||
RXE_MIN_MW_INDEX = RXE_MAX_MR_INDEX + 1,
|
||||
RXE_MAX_MW_INDEX = DEFAULT_MAX_VALUE,
|
||||
RXE_MAX_MW = RXE_MAX_MW_INDEX - RXE_MIN_MW_INDEX,
|
||||
|
||||
RXE_MAX_PKT_PER_ACK = 64,
|
||||
|
||||
|
||||
@ -23,16 +23,16 @@ static const struct rxe_type_info {
|
||||
.size = sizeof(struct rxe_ucontext),
|
||||
.elem_offset = offsetof(struct rxe_ucontext, elem),
|
||||
.min_index = 1,
|
||||
.max_index = UINT_MAX,
|
||||
.max_elem = UINT_MAX,
|
||||
.max_index = RXE_MAX_UCONTEXT,
|
||||
.max_elem = RXE_MAX_UCONTEXT,
|
||||
},
|
||||
[RXE_TYPE_PD] = {
|
||||
.name = "pd",
|
||||
.size = sizeof(struct rxe_pd),
|
||||
.elem_offset = offsetof(struct rxe_pd, elem),
|
||||
.min_index = 1,
|
||||
.max_index = UINT_MAX,
|
||||
.max_elem = UINT_MAX,
|
||||
.max_index = RXE_MAX_PD,
|
||||
.max_elem = RXE_MAX_PD,
|
||||
},
|
||||
[RXE_TYPE_AH] = {
|
||||
.name = "ah",
|
||||
@ -40,7 +40,7 @@ static const struct rxe_type_info {
|
||||
.elem_offset = offsetof(struct rxe_ah, elem),
|
||||
.min_index = RXE_MIN_AH_INDEX,
|
||||
.max_index = RXE_MAX_AH_INDEX,
|
||||
.max_elem = RXE_MAX_AH_INDEX - RXE_MIN_AH_INDEX + 1,
|
||||
.max_elem = RXE_MAX_AH,
|
||||
},
|
||||
[RXE_TYPE_SRQ] = {
|
||||
.name = "srq",
|
||||
@ -49,7 +49,7 @@ static const struct rxe_type_info {
|
||||
.cleanup = rxe_srq_cleanup,
|
||||
.min_index = RXE_MIN_SRQ_INDEX,
|
||||
.max_index = RXE_MAX_SRQ_INDEX,
|
||||
.max_elem = RXE_MAX_SRQ_INDEX - RXE_MIN_SRQ_INDEX + 1,
|
||||
.max_elem = RXE_MAX_SRQ,
|
||||
},
|
||||
[RXE_TYPE_QP] = {
|
||||
.name = "qp",
|
||||
@ -58,7 +58,7 @@ static const struct rxe_type_info {
|
||||
.cleanup = rxe_qp_cleanup,
|
||||
.min_index = RXE_MIN_QP_INDEX,
|
||||
.max_index = RXE_MAX_QP_INDEX,
|
||||
.max_elem = RXE_MAX_QP_INDEX - RXE_MIN_QP_INDEX + 1,
|
||||
.max_elem = RXE_MAX_QP,
|
||||
},
|
||||
[RXE_TYPE_CQ] = {
|
||||
.name = "cq",
|
||||
@ -66,8 +66,8 @@ static const struct rxe_type_info {
|
||||
.elem_offset = offsetof(struct rxe_cq, elem),
|
||||
.cleanup = rxe_cq_cleanup,
|
||||
.min_index = 1,
|
||||
.max_index = UINT_MAX,
|
||||
.max_elem = UINT_MAX,
|
||||
.max_index = RXE_MAX_CQ,
|
||||
.max_elem = RXE_MAX_CQ,
|
||||
},
|
||||
[RXE_TYPE_MR] = {
|
||||
.name = "mr",
|
||||
@ -76,7 +76,7 @@ static const struct rxe_type_info {
|
||||
.cleanup = rxe_mr_cleanup,
|
||||
.min_index = RXE_MIN_MR_INDEX,
|
||||
.max_index = RXE_MAX_MR_INDEX,
|
||||
.max_elem = RXE_MAX_MR_INDEX - RXE_MIN_MR_INDEX + 1,
|
||||
.max_elem = RXE_MAX_MR,
|
||||
},
|
||||
[RXE_TYPE_MW] = {
|
||||
.name = "mw",
|
||||
@ -85,7 +85,7 @@ static const struct rxe_type_info {
|
||||
.cleanup = rxe_mw_cleanup,
|
||||
.min_index = RXE_MIN_MW_INDEX,
|
||||
.max_index = RXE_MAX_MW_INDEX,
|
||||
.max_elem = RXE_MAX_MW_INDEX - RXE_MIN_MW_INDEX + 1,
|
||||
.max_elem = RXE_MAX_MW,
|
||||
},
|
||||
};
|
||||
|
||||
|
||||
@ -470,22 +470,27 @@ int sg_alloc_append_table_from_pages(struct sg_append_table *sgt_append,
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
if (sgt_append->prv) {
|
||||
unsigned long next_pfn = (page_to_phys(sg_page(sgt_append->prv)) +
|
||||
sgt_append->prv->offset + sgt_append->prv->length) / PAGE_SIZE;
|
||||
|
||||
if (WARN_ON(offset))
|
||||
return -EINVAL;
|
||||
|
||||
/* Merge contiguous pages into the last SG */
|
||||
prv_len = sgt_append->prv->length;
|
||||
last_pg = sg_page(sgt_append->prv);
|
||||
while (n_pages && pages_are_mergeable(pages[0], last_pg)) {
|
||||
if (sgt_append->prv->length + PAGE_SIZE > max_segment)
|
||||
break;
|
||||
sgt_append->prv->length += PAGE_SIZE;
|
||||
last_pg = pages[0];
|
||||
pages++;
|
||||
n_pages--;
|
||||
if (page_to_pfn(pages[0]) == next_pfn) {
|
||||
last_pg = pfn_to_page(next_pfn - 1);
|
||||
while (n_pages && pages_are_mergeable(pages[0], last_pg)) {
|
||||
if (sgt_append->prv->length + PAGE_SIZE > max_segment)
|
||||
break;
|
||||
sgt_append->prv->length += PAGE_SIZE;
|
||||
last_pg = pages[0];
|
||||
pages++;
|
||||
n_pages--;
|
||||
}
|
||||
if (!n_pages)
|
||||
goto out;
|
||||
}
|
||||
if (!n_pages)
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* compute number of contiguous chunks */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user