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authorXin Long <lucien.xin@gmail.com>2019-04-15 12:15:07 +0300
committerDavid S. Miller <davem@davemloft.net>2019-04-15 23:36:51 +0300
commit9dde27de3e5efa0d032f3c891a0ca833a0d31911 (patch)
treebaba7e7942d6e6a3162db024a2995f306d0afad4 /net/sctp/sm_statefuns.c
parent1033990ac5b2ab6cee93734cb6d301aa3a35bcaa (diff)
downloadlinux-9dde27de3e5efa0d032f3c891a0ca833a0d31911.tar.xz
sctp: implement memory accounting on rx path
sk_forward_alloc's updating is also done on rx path, but to be consistent we change to use sk_mem_charge() in sctp_skb_set_owner_r(). In sctp_eat_data(), it's not enough to check sctp_memory_pressure only, which doesn't work for mem_cgroup_sockets_enabled, so we change to use sk_under_memory_pressure(). When it's under memory pressure, sk_mem_reclaim() and sk_rmem_schedule() should be called on both RENEGE or CHUNK DELIVERY path exit the memory pressure status as soon as possible. Note that sk_rmem_schedule() is using datalen to make things easy there. Reported-by: Matteo Croce <mcroce@redhat.com> Tested-by: Matteo Croce <mcroce@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/sm_statefuns.c')
-rw-r--r--net/sctp/sm_statefuns.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index c9ae3404b1bb..7dfc34b28f4f 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -6412,13 +6412,15 @@ static int sctp_eat_data(const struct sctp_association *asoc,
* in sctp_ulpevent_make_rcvmsg will drop the frame if we grow our
* memory usage too much
*/
- if (*sk->sk_prot_creator->memory_pressure) {
+ if (sk_under_memory_pressure(sk)) {
if (sctp_tsnmap_has_gap(map) &&
(sctp_tsnmap_get_ctsn(map) + 1) == tsn) {
pr_debug("%s: under pressure, reneging for tsn:%u\n",
__func__, tsn);
deliver = SCTP_CMD_RENEGE;
- }
+ } else {
+ sk_mem_reclaim(sk);
+ }
}
/*