Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-10 15:19:51 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

mptcp: setsockopt: handle receive/send buffer and device bind

Browse Source 
Similar to previous patch: needs to be mirrored to all subflows.

Device bind is simpler: it is only done on the initial (listener) sk.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Westphal 2021-04-15 16:44:56 -07:00 committed by David S. Miller
parent 1b3e7ede13
commit 5d0a6bc82d
1 changed files with 52 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
net/mptcp/sockopt.c
View File

@ -85,6 +85,16 @@ static void mptcp_sol_socket_sync_intval(struct mptcp_sock *msk, int optname, in
case SO_PRIORITY:
ssk->sk_priority = val;
break;
case SO_SNDBUF:
case SO_SNDBUFFORCE:
ssk->sk_userlocks |= SOCK_SNDBUF_LOCK;
WRITE_ONCE(ssk->sk_sndbuf, sk->sk_sndbuf);
break;
case SO_RCVBUF:
case SO_RCVBUFFORCE:
ssk->sk_userlocks |= SOCK_RCVBUF_LOCK;
WRITE_ONCE(ssk->sk_rcvbuf, sk->sk_rcvbuf);
break;
}
subflow->setsockopt_seq = msk->setsockopt_seq;
@ -123,6 +133,10 @@ static int mptcp_setsockopt_sol_socket_int(struct mptcp_sock *msk, int optname,
mptcp_sol_socket_sync_intval(msk, optname, val);
return 0;
case SO_PRIORITY:
case SO_SNDBUF:
case SO_SNDBUFFORCE:
case SO_RCVBUF:
case SO_RCVBUFFORCE:
return mptcp_sol_socket_intval(msk, optname, val);
}
@ -139,6 +153,8 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname,
switch (optname) {
case SO_REUSEPORT:
case SO_REUSEADDR:
case SO_BINDTODEVICE:
case SO_BINDTOIFINDEX:
lock_sock(sk);
ssock = __mptcp_nmpc_socket(msk);
if (!ssock) {
@ -152,11 +168,19 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname,
sk->sk_reuseport = ssock->sk->sk_reuseport;
else if (optname == SO_REUSEADDR)
sk->sk_reuse = ssock->sk->sk_reuse;
else if (optname == SO_BINDTODEVICE)
sk->sk_bound_dev_if = ssock->sk->sk_bound_dev_if;
else if (optname == SO_BINDTOIFINDEX)
sk->sk_bound_dev_if = ssock->sk->sk_bound_dev_if;
}
release_sock(sk);
return ret;
case SO_KEEPALIVE:
case SO_PRIORITY:
case SO_SNDBUF:
case SO_SNDBUFFORCE:
case SO_RCVBUF:
case SO_RCVBUFFORCE:
return mptcp_setsockopt_sol_socket_int(msk, optname, optval, optlen);
}
@ -460,6 +484,7 @@ int mptcp_getsockopt(struct sock *sk, int level, int optname,
static void sync_socket_options(struct mptcp_sock *msk, struct sock *ssk)
{
static const unsigned int tx_rx_locks = SOCK_RCVBUF_LOCK | SOCK_SNDBUF_LOCK;
struct sock *sk = (struct sock *)msk;
if (ssk->sk_prot->keepalive) {
@ -470,6 +495,33 @@ static void sync_socket_options(struct mptcp_sock *msk, struct sock *ssk)
}
ssk->sk_priority = sk->sk_priority;
ssk->sk_bound_dev_if = sk->sk_bound_dev_if;
ssk->sk_incoming_cpu = sk->sk_incoming_cpu;
if (sk->sk_userlocks & tx_rx_locks) {
ssk->sk_userlocks |= sk->sk_userlocks & tx_rx_locks;
if (sk->sk_userlocks & SOCK_SNDBUF_LOCK)
WRITE_ONCE(ssk->sk_sndbuf, sk->sk_sndbuf);
if (sk->sk_userlocks & SOCK_RCVBUF_LOCK)
WRITE_ONCE(ssk->sk_rcvbuf, sk->sk_rcvbuf);
}
if (sock_flag(sk, SOCK_LINGER)) {
ssk->sk_lingertime = sk->sk_lingertime;
sock_set_flag(ssk, SOCK_LINGER);
} else {
sock_reset_flag(ssk, SOCK_LINGER);
}
if (sk->sk_mark != ssk->sk_mark) {
ssk->sk_mark = sk->sk_mark;
sk_dst_reset(ssk);
}
sock_valbool_flag(ssk, SOCK_DBG, sock_flag(sk, SOCK_DBG));
if (inet_csk(sk)->icsk_ca_ops != inet_csk(ssk)->icsk_ca_ops)
tcp_set_congestion_control(ssk, inet_csk(sk)->icsk_ca_ops->name, false, true);
}
static void __mptcp_sockopt_sync(struct mptcp_sock *msk, struct sock *ssk)