llc: add support for LLC_OPT_PKTINFO

Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/llc.h b/include/linux/llc.h
index 7733585603f1..ad7074ba81af 100644
--- a/include/linux/llc.h
+++ b/include/linux/llc.h
@@ -36,6 +36,7 @@ enum llc_sockopts {
         LLC_OPT_BUSY_TMR_EXP,   /* busy state expire time (secs). */
         LLC_OPT_TX_WIN,         /* tx window size. */
         LLC_OPT_RX_WIN,         /* rx window size. */
+        LLC_OPT_PKTINFO,        /* ancillary packet information. */
         LLC_OPT_MAX
 };
 
@@ -70,6 +71,12 @@ enum llc_sockopts {
 #define LLC_SAP_RM      0xD4            /* Resource Management          */
 #define LLC_SAP_GLOBAL  0xFF            /* Global SAP.                  */
 
+struct llc_pktinfo {
+        int lpi_ifindex;
+        unsigned char lpi_sap;
+        unsigned char lpi_mac[IFHWADDRLEN];
+};
+
 #ifdef __KERNEL__
 #define LLC_SAP_DYN_START       0xC0
 #define LLC_SAP_DYN_STOP        0xDE
diff --git a/include/net/llc_conn.h b/include/net/llc_conn.h
index e2374e34989f..fe982fd94c4a 100644
--- a/include/net/llc_conn.h
+++ b/include/net/llc_conn.h
@@ -76,6 +76,7 @@ struct llc_sock {
         u32                 rx_pdu_hdr;    /* used for saving header of last pdu
                                               received and caused sending FRMR.
                                               Used for resending FRMR */
+        u32                 cmsg_flags;
 };
 
 static inline struct llc_sock *llc_sk(const struct sock *sk)