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| author | Jon Paul Maloy <jon.maloy@ericsson.com> | 2015-10-22 08:51:45 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-10-24 06:56:44 -0700 |
| commit | 7214bcf8753109256d635ba079938fbd6fcf713b (patch) | |
| tree | 68362919c4ba243fa20d31fb35e9f485e1b024bc /net/tipc/udp_media.c | |
| parent | 60852d679575b0d7ce62497938116f92654ae908 (diff) | |
| download | linux-7214bcf8753109256d635ba079938fbd6fcf713b.tar.gz linux-7214bcf8753109256d635ba079938fbd6fcf713b.tar.bz2 linux-7214bcf8753109256d635ba079938fbd6fcf713b.zip | |
tipc: eliminate redundant buffer cloning at transmission
Since all packet transmitters (link, bcast, discovery) are now sending
consumable buffer clones to the bearer layer, we can remove the
redundant buffer cloning that is perfomed in the lower level functions
tipc_l2_send_msg() and tipc_udp_send_msg().
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/udp_media.c')
| -rw-r--r-- | net/tipc/udp_media.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c index 0021c01dec17..816914ef228d 100644 --- a/net/tipc/udp_media.c +++ b/net/tipc/udp_media.c @@ -155,14 +155,12 @@ static int tipc_udp_send_msg(struct net *net, struct sk_buff *skb, struct udp_bearer *ub; struct udp_media_addr *dst = (struct udp_media_addr *)&dest->value; struct udp_media_addr *src = (struct udp_media_addr *)&b->addr.value; - struct sk_buff *clone; struct rtable *rt; if (skb_headroom(skb) < UDP_MIN_HEADROOM) pskb_expand_head(skb, UDP_MIN_HEADROOM, 0, GFP_ATOMIC); - clone = skb_clone(skb, GFP_ATOMIC); - skb_set_inner_protocol(clone, htons(ETH_P_TIPC)); + skb_set_inner_protocol(skb, htons(ETH_P_TIPC)); ub = rcu_dereference_rtnl(b->media_ptr); if (!ub) { err = -ENODEV; @@ -172,7 +170,7 @@ static int tipc_udp_send_msg(struct net *net, struct sk_buff *skb, struct flowi4 fl = { .daddr = dst->ipv4.s_addr, .saddr = src->ipv4.s_addr, - .flowi4_mark = clone->mark, + .flowi4_mark = skb->mark, .flowi4_proto = IPPROTO_UDP }; rt = ip_route_output_key(net, &fl); @@ -181,7 +179,7 @@ static int tipc_udp_send_msg(struct net *net, struct sk_buff *skb, goto tx_error; } ttl = ip4_dst_hoplimit(&rt->dst); - err = udp_tunnel_xmit_skb(rt, ub->ubsock->sk, clone, + err = udp_tunnel_xmit_skb(rt, ub->ubsock->sk, skb, src->ipv4.s_addr, dst->ipv4.s_addr, 0, ttl, 0, src->udp_port, dst->udp_port, @@ -204,7 +202,7 @@ static int tipc_udp_send_msg(struct net *net, struct sk_buff *skb, if (err) goto tx_error; ttl = ip6_dst_hoplimit(ndst); - err = udp_tunnel6_xmit_skb(ndst, ub->ubsock->sk, clone, + err = udp_tunnel6_xmit_skb(ndst, ub->ubsock->sk, skb, ndst->dev, &src->ipv6, &dst->ipv6, 0, ttl, src->udp_port, dst->udp_port, false); @@ -213,7 +211,7 @@ static int tipc_udp_send_msg(struct net *net, struct sk_buff *skb, return err; tx_error: - kfree_skb(clone); + kfree_skb(skb); return err; } |