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net: rmnet_data: Optimize the UL aggregation skip logic

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Optimize for the IPv6 normal ping case instead of the
fragmentation scenario. Also, check for IPv6 explicitly
rather than directly disecting the packet.

CRs-Fixed: 2131879
Change-Id: Idee5c7d52972d06aee6ac6d71ebd5d1c3c875f9f
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
This commit is contained in:
Subash Abhinov Kasiviswanathan 2017-11-09 17:32:52 -07:00
commit b7500cc99f
1 changed files with 4 additions and 4 deletions
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8
net/rmnet_data/rmnet_map_data.c
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@ -753,18 +753,18 @@ int rmnet_ul_aggregation_skip(struct sk_buff *skb, int offset)
if (ip4h->protocol == IPPROTO_ICMP)
is_icmp = 1;
} else {
} else if ((skb->data[offset]) >> 4 == 0x06) {
struct ipv6hdr *ip6h = (struct ipv6hdr *)(packet_start);
if (ip6h->nexthdr == NEXTHDR_FRAGMENT) {
if (ip6h->nexthdr == IPPROTO_ICMPV6) {
is_icmp = 1;
} else if (ip6h->nexthdr == NEXTHDR_FRAGMENT) {
struct frag_hdr *frag;
frag = (struct frag_hdr *)(packet_start
+ sizeof(struct ipv6hdr));
if (frag->nexthdr == IPPROTO_ICMPV6)
is_icmp = 1;
} else if (ip6h->nexthdr == IPPROTO_ICMPV6) {
is_icmp = 1;
}
}