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Optimized the function of fill_connection_key.

Browse source 
Remove some unnecessary code to improve the performance of
the filter-rewriter module.

Signed-off-by: Lei Rao <lei.rao@intel.com>
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@trasno.org>
This commit is contained in:
Rao, Lei 2021-11-03 10:21:12 +08:00 • committed by Juan Quintela
parent e5fdf92096
commit 64153ca613
4 changed files with 17 additions and 32 deletions
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31
net/colo.c
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@ -83,19 +83,26 @@ int parse_packet_early(Packet *pkt)
return 0;
}
void extract_ip_and_port(uint32_t tmp_ports, ConnectionKey *key, Packet *pkt)
void extract_ip_and_port(uint32_t tmp_ports, ConnectionKey *key,
Packet *pkt, bool reverse)
{
if (reverse) {
key->src = pkt->ip->ip_dst;
key->dst = pkt->ip->ip_src;
key->src_port = ntohs(tmp_ports & 0xffff);
key->dst_port = ntohs(tmp_ports >> 16);
} else {
key->src = pkt->ip->ip_src;
key->dst = pkt->ip->ip_dst;
key->src_port = ntohs(tmp_ports >> 16);
key->dst_port = ntohs(tmp_ports & 0xffff);
}
}
void fill_connection_key(Packet *pkt, ConnectionKey *key)
void fill_connection_key(Packet *pkt, ConnectionKey *key, bool reverse)
{
uint32_t tmp_ports;
uint32_t tmp_ports = 0;
memset(key, 0, sizeof(*key));
key->ip_proto = pkt->ip->ip_p;
switch (key->ip_proto) {
@ -106,29 +113,15 @@ void fill_connection_key(Packet *pkt, ConnectionKey *key)
case IPPROTO_SCTP:
case IPPROTO_UDPLITE:
tmp_ports = *(uint32_t *)(pkt->transport_header);
extract_ip_and_port(tmp_ports, key, pkt);
break;
case IPPROTO_AH:
tmp_ports = *(uint32_t *)(pkt->transport_header + 4);
extract_ip_and_port(tmp_ports, key, pkt);
break;
default:
break;
}
}
void reverse_connection_key(ConnectionKey *key)
{
struct in_addr tmp_ip;
uint16_t tmp_port;
tmp_ip = key->src;
key->src = key->dst;
key->dst = tmp_ip;
tmp_port = key->src_port;
key->src_port = key->dst_port;
key->dst_port = tmp_port;
extract_ip_and_port(tmp_ports, key, pkt, reverse);
}
Connection *connection_new(ConnectionKey *key)