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Diffstat (limited to 'ospfd/ospf_network.c')
-rw-r--r--ospfd/ospf_network.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/ospfd/ospf_network.c b/ospfd/ospf_network.c
index e8c98371..11155dbc 100644
--- a/ospfd/ospf_network.c
+++ b/ospfd/ospf_network.c
@@ -41,6 +41,7 @@ extern struct zebra_privs_t ospfd_privs;
#include "ospfd/ospf_lsdb.h"
#include "ospfd/ospf_neighbor.h"
#include "ospfd/ospf_packet.h"
+#include "ospfd/ospf_dump.h"
@@ -233,3 +234,37 @@ ospf_sock_init (void)
return ospf_sock;
}
+
+void
+ospf_adjust_sndbuflen (struct ospf * ospf, int buflen)
+{
+ int ret, newbuflen;
+ /* Check if any work has to be done at all. */
+ if (ospf->maxsndbuflen >= buflen)
+ return;
+ if (IS_DEBUG_OSPF (zebra, ZEBRA_INTERFACE))
+ zlog_debug ("%s: adjusting OSPF send buffer size to %d",
+ __func__, buflen);
+ if (ospfd_privs.change (ZPRIVS_RAISE))
+ zlog_err ("%s: could not raise privs, %s", __func__,
+ safe_strerror (errno));
+ /* Now we try to set SO_SNDBUF to what our caller has requested
+ * (OSPF_SNDBUFLEN_DEFAULT initially, which seems to be a sane
+ * default; or the MTU of a newly added interface). However,
+ * if the OS has truncated the actual buffer size to somewhat
+ * less or bigger size, try to detect it and update our records
+ * appropriately.
+ */
+ ret = setsockopt_so_sendbuf (ospf->fd, buflen);
+ newbuflen = getsockopt_so_sendbuf (ospf->fd);
+ if (ret < 0 || newbuflen != buflen)
+ zlog_warn ("%s: tried to set SO_SNDBUF to %d, but got %d",
+ __func__, buflen, newbuflen);
+ if (newbuflen >= 0)
+ ospf->maxsndbuflen = newbuflen;
+ else
+ zlog_warn ("%s: failed to get SO_SNDBUF", __func__);
+ if (ospfd_privs.change (ZPRIVS_LOWER))
+ zlog_err ("%s: could not lower privs, %s", __func__,
+ safe_strerror (errno));
+}