diff options
| -rw-r--r-- | include/uapi/linux/tc_act/tc_csum.h | 3 | ||||
| -rw-r--r-- | net/sched/act_csum.c | 30 |
2 files changed, 32 insertions, 1 deletions
diff --git a/include/uapi/linux/tc_act/tc_csum.h b/include/uapi/linux/tc_act/tc_csum.h index 8ac8041ab5f1..a11bb355dbfb 100644 --- a/include/uapi/linux/tc_act/tc_csum.h +++ b/include/uapi/linux/tc_act/tc_csum.h @@ -21,7 +21,8 @@ enum { TCA_CSUM_UPDATE_FLAG_IGMP = 4, TCA_CSUM_UPDATE_FLAG_TCP = 8, TCA_CSUM_UPDATE_FLAG_UDP = 16, - TCA_CSUM_UPDATE_FLAG_UDPLITE = 32 + TCA_CSUM_UPDATE_FLAG_UDPLITE = 32, + TCA_CSUM_UPDATE_FLAG_SCTP = 64, }; struct tc_csum { diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c index a0edd80a44db..e978ccd4402c 100644 --- a/net/sched/act_csum.c +++ b/net/sched/act_csum.c @@ -30,6 +30,7 @@ #include <net/tcp.h> #include <net/udp.h> #include <net/ip6_checksum.h> +#include <net/sctp/checksum.h> #include <net/act_api.h> @@ -322,6 +323,25 @@ ignore_obscure_skb: return 1; } +static int tcf_csum_sctp(struct sk_buff *skb, unsigned int ihl, + unsigned int ipl) +{ + struct sctphdr *sctph; + + if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_SCTP) + return 1; + + sctph = tcf_csum_skb_nextlayer(skb, ihl, ipl, sizeof(*sctph)); + if (!sctph) + return 0; + + sctph->checksum = sctp_compute_cksum(skb, + skb_network_offset(skb) + ihl); + skb->ip_summed = CHECKSUM_NONE; + + return 1; +} + static int tcf_csum_ipv4(struct sk_buff *skb, u32 update_flags) { const struct iphdr *iph; @@ -365,6 +385,11 @@ static int tcf_csum_ipv4(struct sk_buff *skb, u32 update_flags) ntohs(iph->tot_len), 1)) goto fail; break; + case IPPROTO_SCTP: + if ((update_flags & TCA_CSUM_UPDATE_FLAG_SCTP) && + !tcf_csum_sctp(skb, iph->ihl * 4, ntohs(iph->tot_len))) + goto fail; + break; } if (update_flags & TCA_CSUM_UPDATE_FLAG_IPV4HDR) { @@ -481,6 +506,11 @@ static int tcf_csum_ipv6(struct sk_buff *skb, u32 update_flags) pl + sizeof(*ip6h), 1)) goto fail; goto done; + case IPPROTO_SCTP: + if ((update_flags & TCA_CSUM_UPDATE_FLAG_SCTP) && + !tcf_csum_sctp(skb, hl, pl + sizeof(*ip6h))) + goto fail; + goto done; default: goto ignore_skb; } |