From e2d1bca7e6134671bcb19810d004a252aa6a644d Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 10 Apr 2007 20:46:21 -0700 Subject: [PATCH] [SK_BUFF]: Use skb_reset_network_header in skb_push cases skb_push updates and returns skb->data, so we can just call skb_reset_network_header after the call to skb_push. Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- net/core/netpoll.c | 4 +++- net/ipv4/ip_gre.c | 3 ++- net/ipv4/ip_output.c | 3 ++- net/ipv4/ipip.c | 3 ++- net/ipv4/ipmr.c | 3 ++- net/ipv4/ipvs/ip_vs_xmit.c | 3 ++- net/ipv4/xfrm4_mode_beet.c | 3 ++- net/ipv4/xfrm4_mode_transport.c | 4 +++- net/ipv4/xfrm4_mode_tunnel.c | 3 ++- net/ipv6/ip6_output.c | 14 ++++++++++---- net/ipv6/ip6_tunnel.c | 3 ++- net/ipv6/sit.c | 3 ++- 12 files changed, 34 insertions(+), 15 deletions(-) diff --git a/net/core/netpoll.c b/net/core/netpoll.c index b4d1cdd58f..44e030eb6e 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -308,7 +308,9 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len) if (udph->check == 0) udph->check = CSUM_MANGLED_0; - skb->nh.iph = iph = (struct iphdr *)skb_push(skb, sizeof(*iph)); + skb_push(skb, sizeof(*iph)); + skb_reset_network_header(skb); + iph = skb->nh.iph; /* iph->version = 4; iph->ihl = 5; */ put_unaligned(0x45, (unsigned char *)iph); diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index ced2c4baf1..f84ca6668f 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -828,7 +828,8 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) } skb->h.raw = skb->nh.raw; - skb->nh.raw = skb_push(skb, gre_hlen); + skb_push(skb, gre_hlen); + skb_reset_network_header(skb); memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED | IPSKB_REROUTED); diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 32f1a23a80..d329718a8e 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -503,7 +503,8 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff*)) if (frag) { frag->ip_summed = CHECKSUM_NONE; frag->h.raw = frag->data; - frag->nh.raw = __skb_push(frag, hlen); + __skb_push(frag, hlen); + skb_reset_network_header(frag); memcpy(frag->nh.raw, iph, hlen); iph = frag->nh.iph; iph->tot_len = htons(frag->len); diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c index 5f886c8928..843cc09f96 100644 --- a/net/ipv4/ipip.c +++ b/net/ipv4/ipip.c @@ -619,7 +619,8 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) } skb->h.raw = skb->nh.raw; - skb->nh.raw = skb_push(skb, sizeof(struct iphdr)); + skb_push(skb, sizeof(struct iphdr)); + skb_reset_network_header(skb); memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED | IPSKB_REROUTED); diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index f73f4e402f..05c82ca45a 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -1593,7 +1593,8 @@ int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait) return -ENOMEM; } - skb2->nh.raw = skb_push(skb2, sizeof(struct iphdr)); + skb_push(skb2, sizeof(struct iphdr)); + skb_reset_network_header(skb2); skb2->nh.iph->ihl = sizeof(struct iphdr)>>2; skb2->nh.iph->saddr = rt->rt_src; skb2->nh.iph->daddr = rt->rt_dst; diff --git a/net/ipv4/ipvs/ip_vs_xmit.c b/net/ipv4/ipvs/ip_vs_xmit.c index f73c5acf5d..d1403d0855 100644 --- a/net/ipv4/ipvs/ip_vs_xmit.c +++ b/net/ipv4/ipvs/ip_vs_xmit.c @@ -385,7 +385,8 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, /* fix old IP header checksum */ ip_send_check(old_iph); - skb->nh.raw = skb_push(skb, sizeof(struct iphdr)); + skb_push(skb, sizeof(struct iphdr)); + skb_reset_network_header(skb); memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); /* drop old route */ diff --git a/net/ipv4/xfrm4_mode_beet.c b/net/ipv4/xfrm4_mode_beet.c index d419e15d98..eaaf3565f3 100644 --- a/net/ipv4/xfrm4_mode_beet.c +++ b/net/ipv4/xfrm4_mode_beet.c @@ -40,7 +40,8 @@ static int xfrm4_beet_output(struct xfrm_state *x, struct sk_buff *skb) if (unlikely(optlen)) hdrlen += IPV4_BEET_PHMAXLEN - (optlen & 4); - skb->nh.raw = skb_push(skb, x->props.header_len + hdrlen); + skb_push(skb, x->props.header_len + hdrlen); + skb_reset_network_header(skb); top_iph = skb->nh.iph; skb->h.raw += sizeof(*iph) - hdrlen; diff --git a/net/ipv4/xfrm4_mode_transport.c b/net/ipv4/xfrm4_mode_transport.c index 92676b7e40..290c0f2e7c 100644 --- a/net/ipv4/xfrm4_mode_transport.c +++ b/net/ipv4/xfrm4_mode_transport.c @@ -32,7 +32,9 @@ static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb) ihl = iph->ihl * 4; skb->h.raw += ihl; - skb->nh.raw = memmove(skb_push(skb, x->props.header_len), iph, ihl); + skb_push(skb, x->props.header_len); + skb_reset_network_header(skb); + memmove(skb->nh.raw, iph, ihl); return 0; } diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c index ffc6005d1d..bec851f278 100644 --- a/net/ipv4/xfrm4_mode_tunnel.c +++ b/net/ipv4/xfrm4_mode_tunnel.c @@ -49,7 +49,8 @@ static int xfrm4_tunnel_output(struct xfrm_state *x, struct sk_buff *skb) iph = skb->nh.iph; skb->h.ipiph = iph; - skb->nh.raw = skb_push(skb, x->props.header_len); + skb_push(skb, x->props.header_len); + skb_reset_network_header(skb); top_iph = skb->nh.iph; top_iph->ihl = 5; diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 4406546d3c..8a7b5c7601 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -191,7 +191,9 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl, ipv6_push_nfrag_opts(skb, opt, &proto, &first_hop); } - hdr = skb->nh.ipv6h = (struct ipv6hdr*)skb_push(skb, sizeof(struct ipv6hdr)); + skb_push(skb, sizeof(struct ipv6hdr)); + skb_reset_network_header(skb); + hdr = skb->nh.ipv6h; /* * Fill in the IPv6 header @@ -626,7 +628,8 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)) __skb_pull(skb, hlen); fh = (struct frag_hdr*)__skb_push(skb, sizeof(struct frag_hdr)); - skb->nh.raw = __skb_push(skb, hlen); + __skb_push(skb, hlen); + skb_reset_network_header(skb); memcpy(skb->nh.raw, tmp_hdr, hlen); ipv6_select_ident(skb, fh); @@ -649,7 +652,8 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)) frag->ip_summed = CHECKSUM_NONE; frag->h.raw = frag->data; fh = (struct frag_hdr*)__skb_push(frag, sizeof(struct frag_hdr)); - frag->nh.raw = __skb_push(frag, hlen); + __skb_push(frag, hlen); + skb_reset_network_header(frag); memcpy(frag->nh.raw, tmp_hdr, hlen); offset += skb->len - hlen - sizeof(struct frag_hdr); fh->nexthdr = nexthdr; @@ -1346,7 +1350,9 @@ int ip6_push_pending_frames(struct sock *sk) if (opt && opt->opt_nflen) ipv6_push_nfrag_opts(skb, opt, &proto, &final_dst); - skb->nh.ipv6h = hdr = (struct ipv6hdr*) skb_push(skb, sizeof(struct ipv6hdr)); + skb_push(skb, sizeof(struct ipv6hdr)); + skb_reset_network_header(skb); + hdr = skb->nh.ipv6h; *(__be32*)hdr = fl->fl6_flowlabel | htonl(0x60000000 | ((int)np->cork.tclass << 20)); diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 30df8e6c42..a1e4f39c67 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -907,7 +907,8 @@ static int ip6_tnl_xmit2(struct sk_buff *skb, init_tel_txopt(&opt, encap_limit); ipv6_push_nfrag_opts(skb, &opt.ops, &proto, NULL); } - skb->nh.raw = skb_push(skb, sizeof(struct ipv6hdr)); + skb_push(skb, sizeof(struct ipv6hdr)); + skb_reset_network_header(skb); ipv6h = skb->nh.ipv6h; *(__be32*)ipv6h = fl->fl6_flowlabel | htonl(0x60000000); dsfield = INET_ECN_encapsulate(0, dsfield); diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 0477728578..62883d41b6 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -554,7 +554,8 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) } skb->h.raw = skb->nh.raw; - skb->nh.raw = skb_push(skb, sizeof(struct iphdr)); + skb_push(skb, sizeof(struct iphdr)); + skb_reset_network_header(skb); memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); IPCB(skb)->flags = 0; dst_release(skb->dst); -- 2.39.5