From 4e7696d90b51a1a73ce0e8174f3aff58b914619c Mon Sep 17 00:00:00 2001
From: Xin Long <lucien.xin@gmail.com>
Date: Mon, 9 Dec 2019 13:45:18 +0800
Subject: sctp: get netns from asoc and ep base

Commit 312434617cb1 ("sctp: cache netns in sctp_ep_common") set netns
in asoc and ep base since they're created, and it will never change.
It's a better way to get netns from asoc and ep base, comparing to
calling sock_net().

This patch is to replace them.

v1->v2:
  - no change.

Suggested-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/sctp/sm_sideeffect.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

(limited to 'net/sctp/sm_sideeffect.c')

diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index acd737d4c0e0..ce82699d0dca 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -516,8 +516,6 @@ static void sctp_do_8_2_transport_strike(struct sctp_cmd_seq *commands,
 					 struct sctp_transport *transport,
 					 int is_hb)
 {
-	struct net *net = sock_net(asoc->base.sk);
-
 	/* The check for association's overall error counter exceeding the
 	 * threshold is done in the state function.
 	 */
@@ -544,10 +542,10 @@ static void sctp_do_8_2_transport_strike(struct sctp_cmd_seq *commands,
 	 * is SCTP_ACTIVE, then mark this transport as Partially Failed,
 	 * see SCTP Quick Failover Draft, section 5.1
 	 */
-	if (net->sctp.pf_enable &&
-	   (transport->state == SCTP_ACTIVE) &&
-	   (transport->error_count < transport->pathmaxrxt) &&
-	   (transport->error_count > transport->pf_retrans)) {
+	if (asoc->base.net->sctp.pf_enable &&
+	    transport->state == SCTP_ACTIVE &&
+	    transport->error_count < transport->pathmaxrxt &&
+	    transport->error_count > transport->pf_retrans) {
 
 		sctp_assoc_control_transport(asoc, transport,
 					     SCTP_TRANSPORT_PF,
@@ -798,10 +796,8 @@ static int sctp_cmd_process_sack(struct sctp_cmd_seq *cmds,
 	int err = 0;
 
 	if (sctp_outq_sack(&asoc->outqueue, chunk)) {
-		struct net *net = sock_net(asoc->base.sk);
-
 		/* There are no more TSNs awaiting SACK.  */
-		err = sctp_do_sm(net, SCTP_EVENT_T_OTHER,
+		err = sctp_do_sm(asoc->base.net, SCTP_EVENT_T_OTHER,
 				 SCTP_ST_OTHER(SCTP_EVENT_NO_PENDING_TSN),
 				 asoc->state, asoc->ep, asoc, NULL,
 				 GFP_ATOMIC);
@@ -834,7 +830,7 @@ static void sctp_cmd_assoc_update(struct sctp_cmd_seq *cmds,
 				  struct sctp_association *asoc,
 				  struct sctp_association *new)
 {
-	struct net *net = sock_net(asoc->base.sk);
+	struct net *net = asoc->base.net;
 	struct sctp_chunk *abort;
 
 	if (!sctp_assoc_update(asoc, new))
-- 
cgit