diff options
Diffstat (limited to 'net/ipv6/ip6_output.c')
| -rw-r--r-- | net/ipv6/ip6_output.c | 37 |
1 files changed, 21 insertions, 16 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 4c882cf4e8a..84d0bd5cac9 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -180,7 +180,7 @@ int ip6_output(struct sk_buff *skb) */ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6, - struct ipv6_txoptions *opt) + struct ipv6_txoptions *opt, int tclass) { struct net *net = sock_net(sk); struct ipv6_pinfo *np = inet6_sk(sk); @@ -190,7 +190,6 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6, u8 proto = fl6->flowi6_proto; int seg_len = skb->len; int hlimit = -1; - int tclass = 0; u32 mtu; if (opt) { @@ -228,10 +227,8 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6, /* * Fill in the IPv6 header */ - if (np) { - tclass = np->tclass; + if (np) hlimit = np->hop_limit; - } if (hlimit < 0) hlimit = ip6_dst_hoplimit(dst); @@ -1126,7 +1123,7 @@ static inline int ip6_ufo_append_data(struct sock *sk, hh_len + fragheaderlen + transhdrlen + 20, (flags & MSG_DONTWAIT), &err); if (skb == NULL) - return -ENOMEM; + return err; /* reserve space for Hardware header */ skb_reserve(skb, hh_len); @@ -1193,6 +1190,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, struct sk_buff *skb; unsigned int maxfraglen, fragheaderlen; int exthdrlen; + int dst_exthdrlen; int hh_len; int mtu; int copy; @@ -1248,7 +1246,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, np->cork.hop_limit = hlimit; np->cork.tclass = tclass; mtu = np->pmtudisc == IPV6_PMTUDISC_PROBE ? - rt->dst.dev->mtu : dst_mtu(rt->dst.path); + rt->dst.dev->mtu : dst_mtu(&rt->dst); if (np->frag_size < mtu) { if (np->frag_size) mtu = np->frag_size; @@ -1259,16 +1257,17 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, cork->length = 0; sk->sk_sndmsg_page = NULL; sk->sk_sndmsg_off = 0; - exthdrlen = rt->dst.header_len + (opt ? opt->opt_flen : 0) - - rt->rt6i_nfheader_len; + exthdrlen = (opt ? opt->opt_flen : 0) - rt->rt6i_nfheader_len; length += exthdrlen; transhdrlen += exthdrlen; + dst_exthdrlen = rt->dst.header_len; } else { rt = (struct rt6_info *)cork->dst; fl6 = &inet->cork.fl.u.ip6; opt = np->cork.opt; transhdrlen = 0; exthdrlen = 0; + dst_exthdrlen = 0; mtu = cork->fragsize; } @@ -1368,6 +1367,8 @@ alloc_new_skb: else alloclen = datalen + fragheaderlen; + alloclen += dst_exthdrlen; + /* * The last fragment gets additional space at tail. * Note: we overallocate on fragments with MSG_MODE @@ -1419,9 +1420,9 @@ alloc_new_skb: /* * Find where to start putting bytes */ - data = skb_put(skb, fraglen); - skb_set_network_header(skb, exthdrlen); - data += fragheaderlen; + data = skb_put(skb, fraglen + dst_exthdrlen); + skb_set_network_header(skb, exthdrlen + dst_exthdrlen); + data += fragheaderlen + dst_exthdrlen; skb->transport_header = (skb->network_header + fragheaderlen); if (fraggap) { @@ -1434,6 +1435,7 @@ alloc_new_skb: pskb_trim_unique(skb_prev, maxfraglen); } copy = datalen - transhdrlen - fraggap; + if (copy < 0) { err = -EINVAL; kfree_skb(skb); @@ -1448,6 +1450,7 @@ alloc_new_skb: length -= datalen - fraggap; transhdrlen = 0; exthdrlen = 0; + dst_exthdrlen = 0; csummode = CHECKSUM_NONE; /* @@ -1480,13 +1483,13 @@ alloc_new_skb: if (page && (left = PAGE_SIZE - off) > 0) { if (copy >= left) copy = left; - if (page != frag->page) { + if (page != skb_frag_page(frag)) { if (i == MAX_SKB_FRAGS) { err = -EMSGSIZE; goto error; } - get_page(page); skb_fill_page_desc(skb, i, page, sk->sk_sndmsg_off, 0); + skb_frag_ref(skb, i); frag = &skb_shinfo(skb)->frags[i]; } } else if(i < MAX_SKB_FRAGS) { @@ -1506,12 +1509,14 @@ alloc_new_skb: err = -EMSGSIZE; goto error; } - if (getfrag(from, page_address(frag->page)+frag->page_offset+frag->size, offset, copy, skb->len, skb) < 0) { + if (getfrag(from, + skb_frag_address(frag) + skb_frag_size(frag), + offset, copy, skb->len, skb) < 0) { err = -EFAULT; goto error; } sk->sk_sndmsg_off += copy; - frag->size += copy; + skb_frag_size_add(frag, copy); skb->len += copy; skb->data_len += copy; skb->truesize += copy; |