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zebra: Refactor _add and _del to use a common function

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The decoding of _add and _del functions is practically identical
do a bit of work and make them so.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2020-01-03 13:30:37 -05:00
parent 4824d144b6
commit 0bd371c61e
1 changed files with 61 additions and 47 deletions
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108
zebra/zebra_vxlan.c
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@ -7682,6 +7682,55 @@ int zebra_vxlan_handle_kernel_neigh_update(struct interface *ifp,
return zvni_remote_neigh_update(zvni, ifp, ip, macaddr, state); return zvni_remote_neigh_update(zvni, ifp, ip, macaddr, state);
} }
static int32_t
zebra_vxlan_remote_macip_helper(bool add, struct stream *s, vni_t *vni,
struct ethaddr *macaddr, uint16_t *ipa_len,
struct ipaddr *ip, struct in_addr *vtep_ip,
uint8_t *flags, uint32_t *seq)
{
uint16_t l = 0;
/*
* Obtain each remote MACIP and process.
* Message contains VNI, followed by MAC followed by IP (if any)
* followed by remote VTEP IP.
*/
memset(ip, 0, sizeof(*ip));
STREAM_GETL(s, *vni);
STREAM_GET(macaddr->octet, s, ETH_ALEN);
STREAM_GETL(s, *ipa_len);
if (*ipa_len) {
if (*ipa_len == IPV4_MAX_BYTELEN)
ip->ipa_type = IPADDR_V4;
else if (*ipa_len == IPV6_MAX_BYTELEN)
ip->ipa_type = IPADDR_V6;
else {
if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug(
"ipa_len *must* be %d or %d bytes in length not %d",
IPV4_MAX_BYTELEN, IPV6_MAX_BYTELEN,
*ipa_len);
goto stream_failure;
}
STREAM_GET(&ip->ip.addr, s, *ipa_len);
}
l += 4 + ETH_ALEN + 4 + *ipa_len;
STREAM_GET(&vtep_ip->s_addr, s, IPV4_MAX_BYTELEN);
l += IPV4_MAX_BYTELEN;
if (add) {
STREAM_GETC(s, *flags);
STREAM_GETL(s, *seq);
l += 5;
}
return l;
stream_failure:
return -1;
}
/* /*
* Handle message from client to delete a remote MACIP for a VNI. * Handle message from client to delete a remote MACIP for a VNI.
@ -7704,34 +7753,14 @@ void zebra_vxlan_remote_macip_del(ZAPI_HANDLER_ARGS)
s = msg; s = msg;
while (l < hdr->length) { while (l < hdr->length) {
/* Obtain each remote MACIP and process. */ int res_length = zebra_vxlan_remote_macip_helper(
/* Message contains VNI, followed by MAC followed by IP (if any) false, s, &vni, &macaddr, &ipa_len, &ip, &vtep_ip, NULL,
* followed by remote VTEP IP. NULL);
*/
memset(&ip, 0, sizeof(ip));
STREAM_GETL(s, vni);
STREAM_GET(&macaddr.octet, s, ETH_ALEN);
STREAM_GETL(s, ipa_len);
if (ipa_len) { if (res_length == -1)
if (ipa_len == IPV4_MAX_BYTELEN) goto stream_failure;
ip.ipa_type = IPADDR_V4;
else if (ipa_len == IPV6_MAX_BYTELEN)
ip.ipa_type = IPADDR_V6;
else {
if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug("ipa_len *must* be %d or %d bytes in length not %d",
IPV4_MAX_BYTELEN,
IPV6_MAX_BYTELEN, ipa_len);
goto stream_failure;
}
STREAM_GET(&ip.ip.addr, s, ipa_len);
}
l += 4 + ETH_ALEN + 4 + ipa_len;
STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
l += IPV4_MAX_BYTELEN;
l += res_length;
if (IS_ZEBRA_DEBUG_VXLAN) if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug( zlog_debug(
"Recv MACIP DEL VNI %u MAC %s%s%s Remote VTEP %s from %s", "Recv MACIP DEL VNI %u MAC %s%s%s Remote VTEP %s from %s",
@ -7780,29 +7809,14 @@ void zebra_vxlan_remote_macip_add(ZAPI_HANDLER_ARGS)
s = msg; s = msg;
while (l < hdr->length) { while (l < hdr->length) {
/* Obtain each remote MACIP and process. */ int res_length = zebra_vxlan_remote_macip_helper(
/* Message contains VNI, followed by MAC followed by IP (if any) true, s, &vni, &macaddr, &ipa_len, &ip, &vtep_ip,
* followed by remote VTEP IP. &flags, &seq);
*/
memset(&ip, 0, sizeof(ip));
STREAM_GETL(s, vni);
STREAM_GET(&macaddr.octet, s, ETH_ALEN);
STREAM_GETL(s, ipa_len);
if (ipa_len) {
ip.ipa_type = (ipa_len == IPV4_MAX_BYTELEN) ? IPADDR_V4
: IPADDR_V6;
STREAM_GET(&ip.ip.addr, s, ipa_len);
}
l += 4 + ETH_ALEN + 4 + ipa_len;
STREAM_GET(&vtep_ip.s_addr, s, IPV4_MAX_BYTELEN);
l += IPV4_MAX_BYTELEN;
/* Get flags - sticky mac and/or gateway mac */ if (res_length == -1)
STREAM_GETC(s, flags); goto stream_failure;
l++;
STREAM_GETL(s, seq);
l += 4;
l += res_length;
if (IS_ZEBRA_DEBUG_VXLAN) if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug( zlog_debug(
"Recv MACIP ADD VNI %u MAC %s%s%s flags 0x%x seq %u VTEP %s from %s", "Recv MACIP ADD VNI %u MAC %s%s%s flags 0x%x seq %u VTEP %s from %s",