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pimd: Register with kernel to get unknown multicast packets

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Start the process of creating the pimreg vif device so that
we can get the callbacks from the kernel with the multicast packets

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2015-10-19 18:23:16 -07:00 committed by Donald Sharp
parent 7d20b83094
commit b45cefcb44
4 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
pimd/pim_cmd.c
View File

@ -2143,7 +2143,7 @@ DEFUN (show_ip_multicast,
qpim_mroute_oif_highest_vif_index,
VTY_NEWLINE);
vty_out(vty, "Maximum highest VifIndex: %d%s",
MAXVIFS - 1,
MAXVIFS - 2,
VTY_NEWLINE);
vty_out(vty, "%s", VTY_NEWLINE);

2
pimd/pim_iface.c
View File

@ -647,7 +647,7 @@ int pim_if_add_vif(struct interface *ifp)
return -4;
}
if (pim_mroute_add_vif(ifp->ifindex, ifaddr)) {
if (pim_mroute_add_vif(ifp->ifindex, ifaddr, 0)) {
/* pim_mroute_add_vif reported error */
return -5;
}

9
pimd/pim_mroute.c
View File

@ -259,6 +259,7 @@ static void mroute_read_off()
int pim_mroute_socket_enable()
{
int fd;
struct in_addr pimreg = { .s_addr = 0 };
if (PIM_MROUTE_IS_ENABLED)
return -1;
@ -287,6 +288,8 @@ int pim_mroute_socket_enable()
}
qpim_mroute_socket_fd = fd;
pim_mroute_add_vif(MAXVIFS-1, pimreg, VIFF_REGISTER);
qpim_mroute_socket_creation = pim_time_monotonic_sec();
mroute_read_on();
@ -325,7 +328,7 @@ int pim_mroute_socket_disable()
would be used for multicast forwarding, a corresponding multicast
interface must be added to the kernel.
*/
int pim_mroute_add_vif(int vif_index, struct in_addr ifaddr)
int pim_mroute_add_vif(int vif_index, struct in_addr ifaddr, unsigned char flags)
{
struct vifctl vc;
int err;
@ -338,7 +341,7 @@ int pim_mroute_add_vif(int vif_index, struct in_addr ifaddr)
memset(&vc, 0, sizeof(vc));
vc.vifc_vifi = vif_index;
vc.vifc_flags = 0;
vc.vifc_flags = flags;
vc.vifc_threshold = PIM_MROUTE_MIN_TTL;
vc.vifc_rate_limit = 0;
memcpy(&vc.vifc_lcl_addr, &ifaddr, sizeof(vc.vifc_lcl_addr));
@ -349,7 +352,7 @@ int pim_mroute_add_vif(int vif_index, struct in_addr ifaddr)
}
#endif
err = setsockopt(qpim_mroute_socket_fd, IPPROTO_IP, MRT_ADD_VIF, (void*) &vc, sizeof(vc));
err = setsockopt(qpim_mroute_socket_fd, IPPROTO_IP, MRT_ADD_VIF, (void*) &vc, sizeof(vc));
if (err) {
char ifaddr_str[100];
int e = errno;

2
pimd/pim_mroute.h
View File

@ -166,7 +166,7 @@ struct igmpmsg
int pim_mroute_socket_enable(void);
int pim_mroute_socket_disable(void);
int pim_mroute_add_vif(int vif_index, struct in_addr ifaddr);
int pim_mroute_add_vif(int vif_index, struct in_addr ifaddr, unsigned char flags);
int pim_mroute_del_vif(int vif_index);
int pim_mroute_add(struct mfcctl *mc);