mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2024-10-01 12:24:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

ETHARP_SUPPORT_VLAN: add support for an external VLAN filter function instead of only checking for one VLAN (define ETHARP_VLAN_CHECK_FN)

Browse Source
This commit is contained in:
Simon Goldschmidt 2011-07-26 21:03:27 +02:00
parent 41c785d77a
commit 242dc34115
3 changed files with 12 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
CHANGELOG
View File

@ -6,6 +6,10 @@ HISTORY
++ New features: ++ New features:
2011-08-26: Simon Goldschmidt
* etharp.c: ETHARP_SUPPORT_VLAN: add support for an external VLAN filter
function instead of only checking for one VLAN (define ETHARP_VLAN_CHECK_FN)
2011-07-21: Simon Goldschmidt (patch by hanhui) 2011-07-21: Simon Goldschmidt (patch by hanhui)
* ip4.c, etharp.c, pbuf.h: bug #33634 ip_forward() have a faulty behaviour: * ip4.c, etharp.c, pbuf.h: bug #33634 ip_forward() have a faulty behaviour:
Added pbuf flags to mark incoming packets as link-layer broadcast/multicast. Added pbuf flags to mark incoming packets as link-layer broadcast/multicast.

2
src/include/lwip/opt.h
View File

@ -461,6 +461,8 @@
* Additionally, you can define ETHARP_VLAN_CHECK to an u16_t VLAN ID to check. * Additionally, you can define ETHARP_VLAN_CHECK to an u16_t VLAN ID to check.
* If ETHARP_VLAN_CHECK is defined, only VLAN-traffic for this VLAN is accepted. * If ETHARP_VLAN_CHECK is defined, only VLAN-traffic for this VLAN is accepted.
* If ETHARP_VLAN_CHECK is not defined, all traffic is accepted. * If ETHARP_VLAN_CHECK is not defined, all traffic is accepted.
* Alternatively, define a function/define ETHARP_VLAN_CHECK_FN(eth_hdr, vlan)
* that returns 1 to accept a packet or 0 to drop a packet.
*/ */
#ifndef ETHARP_SUPPORT_VLAN #ifndef ETHARP_SUPPORT_VLAN
#define ETHARP_SUPPORT_VLAN 0 #define ETHARP_SUPPORT_VLAN 0

8
src/netif/etharp.c
View File

@ -1297,13 +1297,17 @@ ethernet_input(struct pbuf *p, struct netif *netif)
ETHARP_STATS_INC(etharp.drop); ETHARP_STATS_INC(etharp.drop);
goto free_and_return; goto free_and_return;
} }
#ifdef ETHARP_VLAN_CHECK /* if not, allow all VLANs */ #if defined(ETHARP_VLAN_CHECK) || defined(ETHARP_VLAN_CHECK_FN) /* if not, allow all VLANs */
#ifdef ETHARP_VLAN_CHECK_FN
if (!ETHARP_VLAN_CHECK_FN(ethhdr, vlan)) {
#elif defined(ETHARP_VLAN_CHECK)
if (VLAN_ID(vlan) != ETHARP_VLAN_CHECK) { if (VLAN_ID(vlan) != ETHARP_VLAN_CHECK) {
#endif
/* silently ignore this packet: not for our VLAN */ /* silently ignore this packet: not for our VLAN */
pbuf_free(p); pbuf_free(p);
return ERR_OK; return ERR_OK;
} }
#endif /* ETHARP_VLAN_CHECK */ #endif /* defined(ETHARP_VLAN_CHECK) || defined(ETHARP_VLAN_CHECK_FN) */
type = vlan->tpid; type = vlan->tpid;
ip_hdr_offset = SIZEOF_ETH_HDR + SIZEOF_VLAN_HDR; ip_hdr_offset = SIZEOF_ETH_HDR + SIZEOF_VLAN_HDR;
} }