drivers: net: xgene: fix IPv4 forward crash

This patch fixes the crash observed during IPv4 forward test by
setting the drop field in the dbptr.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Toan Le <toanle@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_cle.c b/drivers/net/ethernet/apm/xgene/xgene_enet_cle.c
index b212488606da4877117e7e9f617a169f2d62f282..11be8044e0d7b9e62f0ac2494925e83d21c3aeab 100644 (file)
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_cle.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_cle.c
@@ -43,6 +43,7 @@ static void xgene_cle_idt_to_hw(u32 dstqid, u32 fpsel,
 static void xgene_cle_dbptr_to_hw(struct xgene_enet_pdata *pdata,
                                  struct xgene_cle_dbptr *dbptr, u32 *buf)
 {
+       buf[0] = SET_VAL(CLE_DROP, dbptr->drop);
        buf[4] = SET_VAL(CLE_FPSEL, dbptr->fpsel) |
                 SET_VAL(CLE_DSTQIDL, dbptr->dstqid);
 
@@ -412,7 +413,7 @@ static int xgene_enet_cle_init(struct xgene_enet_pdata *pdata)
                        .branch = {
                                {
                                        /* IPV4 */
-                                       .valid = 0,
+                                       .valid = 1,
                                        .next_packet_pointer = 22,
                                        .jump_bw = JMP_FW,
                                        .jump_rel = JMP_ABS,
@@ -420,7 +421,7 @@ static int xgene_enet_cle_init(struct xgene_enet_pdata *pdata)
                                        .next_node = PKT_PROT_NODE,
                                        .next_branch = 0,
                                        .data = 0x8,
-                                       .mask = 0xffff
+                                       .mask = 0x0
                                },
                                {
                                        .valid = 0,
@@ -456,7 +457,7 @@ static int xgene_enet_cle_init(struct xgene_enet_pdata *pdata)
                                        .next_node = RSS_IPV4_TCP_NODE,
                                        .next_branch = 0,
                                        .data = 0x0600,
-                                       .mask = 0xffff
+                                       .mask = 0x00ff
                                },
                                {
                                        /* UDP */
@@ -468,7 +469,7 @@ static int xgene_enet_cle_init(struct xgene_enet_pdata *pdata)
                                        .next_node = RSS_IPV4_UDP_NODE,
                                        .next_branch = 0,
                                        .data = 0x1100,
-                                       .mask = 0xffff
+                                       .mask = 0x00ff
                                },
                                {
                                        .valid = 0,
@@ -642,7 +643,7 @@ static int xgene_enet_cle_init(struct xgene_enet_pdata *pdata)
                                {
                                        /* TCP DST Port */
                                        .valid = 0,
-                                       .next_packet_pointer = 256,
+                                       .next_packet_pointer = 258,
                                        .jump_bw = JMP_FW,
                                        .jump_rel = JMP_ABS,
                                        .operation = EQT,

diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_cle.h b/drivers/net/ethernet/apm/xgene/xgene_enet_cle.h
index 29a17abdd828174cb3f5e4fad10458c0df26efca..3bf90683240e1b3d759e67d13d7071aa4e08c020 100644 (file)
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_cle.h
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_cle.h
@@ -83,6 +83,8 @@
 #define CLE_TYPE_POS           0
 #define CLE_TYPE_LEN           2
 
+#define CLE_DROP_POS           28
+#define CLE_DROP_LEN           1
 #define CLE_DSTQIDL_POS                25
 #define CLE_DSTQIDL_LEN                7
 #define CLE_DSTQIDH_POS                0