diff options
| author |   Anand B Jyoti <anand.b.jyoti@intel.com> | 2017-07-12 04:25:16 +0530 |
|---|---|---|
| committer | Anand B Jyoti <anand.b.jyoti@intel.com> | 2017-07-12 07:51:27 +0530 |
| commit | 726de49600fb35ca00d460cb5e2ec400979a6546 (patch) | |
| tree | 09250194805799edd990775a76a10158682a02c0 | |
| parent | b8351286a53658bee2471430aaafac4eb72bdfde (diff) | |
vFW: Remove TTL decrementing in firewall acting as gateway
JIRA: SAMPLEVNF-51
vFW is not functioning as a router and hence TTL decrement is
not required. Remove this TTL decrementing in vFW.
Change-Id: I49ae9b19a473eec0b8072f8a556dca299d89ef74
Signed-off-by: Anand B Jyoti <anand.b.jyoti@intel.com>
| -rw-r--r-- | VNFs/vFW/pipeline/pipeline_vfw_be.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/VNFs/vFW/pipeline/pipeline_vfw_be.c b/VNFs/vFW/pipeline/pipeline_vfw_be.c index 70057b41..7c532ed3 100644 --- a/VNFs/vFW/pipeline/pipeline_vfw_be.c +++ b/VNFs/vFW/pipeline/pipeline_vfw_be.c @@ -637,14 +637,6 @@ rte_vfw_ipv4_packet_filter_and_process(struct rte_mbuf **pkts, vfw_pipe->counters->pkts_drop_fragmented++; } - /* - * Behave like a router, and decrement the TTL of an - * IP packet. If this causes the TTL to become zero, - * the packet will be discarded. Unlike a router, - * no ICMP code 11 (Time * Exceeded) message will be - * sent back to the packet originator. - */ - if (unlikely(ttl <= 1)) { /* * about to decrement to zero (or is somehow @@ -670,18 +662,6 @@ rte_vfw_ipv4_packet_filter_and_process(struct rte_mbuf **pkts, if (unlikely(discard)) { valid_packets &= ~pkt_mask; - } else { - ihdr4->time_to_live = ttl - 1; - - /* update header checksum, from rfc 1141 */ - uint32_t sum; - uint16_t checksum = rte_bswap16( - ihdr4->hdr_checksum); - /* increment checksum high byte */ - sum = checksum + 0x100; - /* add carry */ - checksum = (sum + (sum >> BIT_CARRY)); - ihdr4->hdr_checksum = rte_bswap16(checksum); } /* make next packet data the current */ |