Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  bnx2x: Version update
  bnx2x: Multi Queue
  bnx2x: NAPI and interrupts enable/disable
  bnx2x: NIC load failure cleanup
  bnx2x: Initialization structure
  bnx2x: HW lock timeout
  bnx2x: Minimize lock time
  bnx2x: Fan failure mechanism on additional design
  bnx2x: Rx work check
  ipv6: sysctl fixes
  ipv4: sysctl fixes
  sctp: add verification checks to SCTP_AUTH_KEY option

6 files changed, 144 insertions, 113 deletions

diff --git a/drivers/net/bnx2x.h b/drivers/net/bnx2x.h
index b468f90..a14dba1 100644
--- a/drivers/net/bnx2x.h
+++ b/drivers/net/bnx2x.h
@@ -271,7 +271,7 @@ struct bnx2x_fastpath {
 			 (fp->tx_pkt_prod != fp->tx_pkt_cons))
 
 #define BNX2X_HAS_RX_WORK(fp) \
-			(fp->rx_comp_cons != le16_to_cpu(*fp->rx_cons_sb))
+			(fp->rx_comp_cons != rx_cons_sb)
 
 #define BNX2X_HAS_WORK(fp)	(BNX2X_HAS_RX_WORK(fp) || BNX2X_HAS_TX_WORK(fp))
 
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 971576b..82deea0 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -59,8 +59,8 @@
 #include "bnx2x.h"
 #include "bnx2x_init.h"
 
-#define DRV_MODULE_VERSION      "1.45.17"
-#define DRV_MODULE_RELDATE      "2008/08/13"
+#define DRV_MODULE_VERSION	"1.45.20"
+#define DRV_MODULE_RELDATE	"2008/08/25"
 #define BNX2X_BC_VER		0x040200
 
 /* Time in jiffies before concluding the transmitter is hung */
@@ -1717,8 +1717,8 @@ static int bnx2x_acquire_hw_lock(struct bnx2x *bp, u32 resource)
 		return -EEXIST;
 	}
 
-	/* Try for 1 second every 5ms */
-	for (cnt = 0; cnt < 200; cnt++) {
+	/* Try for 5 second every 5ms */
+	for (cnt = 0; cnt < 1000; cnt++) {
 		/* Try to acquire the lock */
 		REG_WR(bp, hw_lock_control_reg + 4, resource_bit);
 		lock_status = REG_RD(bp, hw_lock_control_reg);
@@ -2550,6 +2550,7 @@ static inline void bnx2x_attn_int_deasserted0(struct bnx2x *bp, u32 attn)
 		BNX2X_ERR("SPIO5 hw attention\n");
 
 		switch (bp->common.board & SHARED_HW_CFG_BOARD_TYPE_MASK) {
+		case SHARED_HW_CFG_BOARD_TYPE_BCM957710A1021G:
 		case SHARED_HW_CFG_BOARD_TYPE_BCM957710A1022G:
 			/* Fan failure attention */
 
@@ -4605,6 +4606,17 @@ static void bnx2x_init_internal_common(struct bnx2x *bp)
 {
 	int i;
 
+	if (bp->flags & TPA_ENABLE_FLAG) {
+		struct tstorm_eth_tpa_exist tpa = {0};
+
+		tpa.tpa_exist = 1;
+
+		REG_WR(bp, BAR_TSTRORM_INTMEM + TSTORM_TPA_EXIST_OFFSET,
+		       ((u32 *)&tpa)[0]);
+		REG_WR(bp, BAR_TSTRORM_INTMEM + TSTORM_TPA_EXIST_OFFSET + 4,
+		       ((u32 *)&tpa)[1]);
+	}
+
 	/* Zero this manually as its initialization is
 	   currently missing in the initTool */
 	for (i = 0; i < (USTORM_AGG_DATA_SIZE >> 2); i++)
@@ -5337,6 +5349,7 @@ static int bnx2x_init_common(struct bnx2x *bp)
 	}
 
 	switch (bp->common.board & SHARED_HW_CFG_BOARD_TYPE_MASK) {
+	case SHARED_HW_CFG_BOARD_TYPE_BCM957710A1021G:
 	case SHARED_HW_CFG_BOARD_TYPE_BCM957710A1022G:
 		/* Fan failure is indicated by SPIO 5 */
 		bnx2x_set_spio(bp, MISC_REGISTERS_SPIO_5,
@@ -5363,17 +5376,6 @@ static int bnx2x_init_common(struct bnx2x *bp)
 
 	enable_blocks_attention(bp);
 
-	if (bp->flags & TPA_ENABLE_FLAG) {
-		struct tstorm_eth_tpa_exist tmp = {0};
-
-		tmp.tpa_exist = 1;
-
-		REG_WR(bp, BAR_TSTRORM_INTMEM + TSTORM_TPA_EXIST_OFFSET,
-		       ((u32 *)&tmp)[0]);
-		REG_WR(bp, BAR_TSTRORM_INTMEM + TSTORM_TPA_EXIST_OFFSET + 4,
-		       ((u32 *)&tmp)[1]);
-	}
-
 	if (!BP_NOMCP(bp)) {
 		bnx2x_acquire_phy_lock(bp);
 		bnx2x_common_init_phy(bp, bp->common.shmem_base);
@@ -5531,6 +5533,7 @@ static int bnx2x_init_port(struct bnx2x *bp)
 	/* Port DMAE comes here */
 
 	switch (bp->common.board & SHARED_HW_CFG_BOARD_TYPE_MASK) {
+	case SHARED_HW_CFG_BOARD_TYPE_BCM957710A1021G:
 	case SHARED_HW_CFG_BOARD_TYPE_BCM957710A1022G:
 		/* add SPIO 5 to group 0 */
 		val = REG_RD(bp, MISC_REG_AEU_ENABLE1_FUNC_0_OUT_0);
@@ -6055,6 +6058,44 @@ static int bnx2x_req_irq(struct bnx2x *bp)
 	return rc;
 }
 
+static void bnx2x_napi_enable(struct bnx2x *bp)
+{
+	int i;
+
+	for_each_queue(bp, i)
+		napi_enable(&bnx2x_fp(bp, i, napi));
+}
+
+static void bnx2x_napi_disable(struct bnx2x *bp)
+{
+	int i;
+
+	for_each_queue(bp, i)
+		napi_disable(&bnx2x_fp(bp, i, napi));
+}
+
+static void bnx2x_netif_start(struct bnx2x *bp)
+{
+	if (atomic_dec_and_test(&bp->intr_sem)) {
+		if (netif_running(bp->dev)) {
+			if (bp->state == BNX2X_STATE_OPEN)
+				netif_wake_queue(bp->dev);
+			bnx2x_napi_enable(bp);
+			bnx2x_int_enable(bp);
+		}
+	}
+}
+
+static void bnx2x_netif_stop(struct bnx2x *bp)
+{
+	bnx2x_int_disable_sync(bp);
+	if (netif_running(bp->dev)) {
+		bnx2x_napi_disable(bp);
+		netif_tx_disable(bp->dev);
+		bp->dev->trans_start = jiffies;	/* prevent tx timeout */
+	}
+}
+
 /*
  * Init service functions
  */
@@ -6338,7 +6379,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 	rc = bnx2x_init_hw(bp, load_code);
 	if (rc) {
 		BNX2X_ERR("HW init failed, aborting\n");
-		goto load_error;
+		goto load_int_disable;
 	}
 
 	/* Setup NIC internals and enable interrupts */
@@ -6350,7 +6391,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 		if (!load_code) {
 			BNX2X_ERR("MCP response failure, aborting\n");
 			rc = -EBUSY;
-			goto load_int_disable;
+			goto load_rings_free;
 		}
 	}
 
@@ -6360,8 +6401,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 
 	/* Enable Rx interrupt handling before sending the ramrod
 	   as it's completed on Rx FP queue */
-	for_each_queue(bp, i)
-		napi_enable(&bnx2x_fp(bp, i, napi));
+	bnx2x_napi_enable(bp);
 
 	/* Enable interrupt handling */
 	atomic_set(&bp->intr_sem, 0);
@@ -6369,7 +6409,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 	rc = bnx2x_setup_leading(bp);
 	if (rc) {
 		BNX2X_ERR("Setup leading failed!\n");
-		goto load_stop_netif;
+		goto load_netif_stop;
 	}
 
 	if (CHIP_IS_E1H(bp))
@@ -6382,7 +6422,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 		for_each_nondefault_queue(bp, i) {
 			rc = bnx2x_setup_multi(bp, i);
 			if (rc)
-				goto load_stop_netif;
+				goto load_netif_stop;
 		}
 
 	if (CHIP_IS_E1(bp))
@@ -6427,20 +6467,17 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 
 	return 0;
 
-load_stop_netif:
+load_netif_stop:
+	bnx2x_napi_disable(bp);
+load_rings_free:
+	/* Free SKBs, SGEs, TPA pool and driver internals */
+	bnx2x_free_skbs(bp);
 	for_each_queue(bp, i)
-		napi_disable(&bnx2x_fp(bp, i, napi));
-
+		bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
 load_int_disable:
 	bnx2x_int_disable_sync(bp);
-
 	/* Release IRQs */
 	bnx2x_free_irq(bp);
-
-	/* Free SKBs, SGEs, TPA pool and driver internals */
-	bnx2x_free_skbs(bp);
-	for_each_queue(bp, i)
-		bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
 load_error:
 	bnx2x_free_mem(bp);
 
@@ -6455,7 +6492,7 @@ static int bnx2x_stop_multi(struct bnx2x *bp, int index)
 
 	/* halt the connection */
 	bp->fp[index].state = BNX2X_FP_STATE_HALTING;
-	bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_HALT, index, 0, 0, 0);
+	bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_HALT, index, 0, index, 0);
 
 	/* Wait for completion */
 	rc = bnx2x_wait_ramrod(bp, BNX2X_FP_STATE_HALTED, index,
@@ -6613,11 +6650,9 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
 	bp->rx_mode = BNX2X_RX_MODE_NONE;
 	bnx2x_set_storm_rx_mode(bp);
 
-	if (netif_running(bp->dev)) {
-		netif_tx_disable(bp->dev);
-		bp->dev->trans_start = jiffies;	/* prevent tx timeout */
-	}
-
+	bnx2x_netif_stop(bp);
+	if (!netif_running(bp->dev))
+		bnx2x_napi_disable(bp);
 	del_timer_sync(&bp->timer);
 	SHMEM_WR(bp, func_mb[BP_FUNC(bp)].drv_pulse_mb,
 		 (DRV_PULSE_ALWAYS_ALIVE | bp->fw_drv_pulse_wr_seq));
@@ -6631,9 +6666,7 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
 		smp_rmb();
 		while (BNX2X_HAS_TX_WORK(fp)) {
 
-			if (!netif_running(bp->dev))
-				bnx2x_tx_int(fp, 1000);
-
+			bnx2x_tx_int(fp, 1000);
 			if (!cnt) {
 				BNX2X_ERR("timeout waiting for queue[%d]\n",
 					  i);
@@ -6649,46 +6682,12 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
 			smp_rmb();
 		}
 	}
-
 	/* Give HW time to discard old tx messages */
 	msleep(1);
 
-	for_each_queue(bp, i)
-		napi_disable(&bnx2x_fp(bp, i, napi));
-	/* Disable interrupts after Tx and Rx are disabled on stack level */
-	bnx2x_int_disable_sync(bp);
-
 	/* Release IRQs */
 	bnx2x_free_irq(bp);
 
-	if (unload_mode == UNLOAD_NORMAL)
-		reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
-
-	else if (bp->flags & NO_WOL_FLAG) {
-		reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP;
-		if (CHIP_IS_E1H(bp))
-			REG_WR(bp, MISC_REG_E1HMF_MODE, 0);
-
-	} else if (bp->wol) {
-		u32 emac_base = port ? GRCBASE_EMAC1 : GRCBASE_EMAC0;
-		u8 *mac_addr = bp->dev->dev_addr;
-		u32 val;
-		/* The mac address is written to entries 1-4 to
-		   preserve entry 0 which is used by the PMF */
-		u8 entry = (BP_E1HVN(bp) + 1)*8;
-
-		val = (mac_addr[0] << 8) | mac_addr[1];
-		EMAC_WR(bp, EMAC_REG_EMAC_MAC_MATCH + entry, val);
-
-		val = (mac_addr[2] << 24) | (mac_addr[3] << 16) |
-		      (mac_addr[4] << 8) | mac_addr[5];
-		EMAC_WR(bp, EMAC_REG_EMAC_MAC_MATCH + entry + 4, val);
-
-		reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_EN;
-
-	} else
-		reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
-
 	if (CHIP_IS_E1(bp)) {
 		struct mac_configuration_cmd *config =
 						bnx2x_sp(bp, mcast_config);
@@ -6711,14 +6710,41 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
 			      U64_LO(bnx2x_sp_mapping(bp, mcast_config)), 0);
 
 	} else { /* E1H */
+		REG_WR(bp, NIG_REG_LLH0_FUNC_EN + port*8, 0);
+
 		bnx2x_set_mac_addr_e1h(bp, 0);
 
 		for (i = 0; i < MC_HASH_SIZE; i++)
 			REG_WR(bp, MC_HASH_OFFSET(bp, i), 0);
 	}
 
-	if (CHIP_IS_E1H(bp))
-		REG_WR(bp, NIG_REG_LLH0_FUNC_EN + port*8, 0);
+	if (unload_mode == UNLOAD_NORMAL)
+		reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
+
+	else if (bp->flags & NO_WOL_FLAG) {
+		reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP;
+		if (CHIP_IS_E1H(bp))
+			REG_WR(bp, MISC_REG_E1HMF_MODE, 0);
+
+	} else if (bp->wol) {
+		u32 emac_base = port ? GRCBASE_EMAC1 : GRCBASE_EMAC0;
+		u8 *mac_addr = bp->dev->dev_addr;
+		u32 val;
+		/* The mac address is written to entries 1-4 to
+		   preserve entry 0 which is used by the PMF */
+		u8 entry = (BP_E1HVN(bp) + 1)*8;
+
+		val = (mac_addr[0] << 8) | mac_addr[1];
+		EMAC_WR(bp, EMAC_REG_EMAC_MAC_MATCH + entry, val);
+
+		val = (mac_addr[2] << 24) | (mac_addr[3] << 16) |
+		      (mac_addr[4] << 8) | mac_addr[5];
+		EMAC_WR(bp, EMAC_REG_EMAC_MAC_MATCH + entry + 4, val);
+
+		reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_EN;
+
+	} else
+		reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
 
 	/* Close multi and leading connections
 	   Completions for ramrods are collected in a synchronous way */
@@ -6821,6 +6847,10 @@ static void __devinit bnx2x_undi_unload(struct bnx2x *bp)
 		 */
 		bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_UNDI);
 		val = REG_RD(bp, DORQ_REG_NORM_CID_OFST);
+		if (val == 0x7)
+			REG_WR(bp, DORQ_REG_NORM_CID_OFST, 0);
+		bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_UNDI);
+
 		if (val == 0x7) {
 			u32 reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
 			/* save our func */
@@ -6898,7 +6928,6 @@ static void __devinit bnx2x_undi_unload(struct bnx2x *bp)
 			       (SHMEM_RD(bp, func_mb[bp->func].drv_mb_header) &
 				DRV_MSG_SEQ_NUMBER_MASK);
 		}
-		bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_UNDI);
 	}
 }
 
@@ -8617,34 +8646,6 @@ test_mem_exit:
 	return rc;
 }
 
-static void bnx2x_netif_start(struct bnx2x *bp)
-{
-	int i;
-
-	if (atomic_dec_and_test(&bp->intr_sem)) {
-		if (netif_running(bp->dev)) {
-			bnx2x_int_enable(bp);
-			for_each_queue(bp, i)
-				napi_enable(&bnx2x_fp(bp, i, napi));
-			if (bp->state == BNX2X_STATE_OPEN)
-				netif_wake_queue(bp->dev);
-		}
-	}
-}
-
-static void bnx2x_netif_stop(struct bnx2x *bp)
-{
-	int i;
-
-	if (netif_running(bp->dev)) {
-		netif_tx_disable(bp->dev);
-		bp->dev->trans_start = jiffies;	/* prevent tx timeout */
-		for_each_queue(bp, i)
-			napi_disable(&bnx2x_fp(bp, i, napi));
-	}
-	bnx2x_int_disable_sync(bp);
-}
-
 static void bnx2x_wait_for_link(struct bnx2x *bp, u8 link_up)
 {
 	int cnt = 1000;
@@ -9250,6 +9251,7 @@ static int bnx2x_poll(struct napi_struct *napi, int budget)
 						 napi);
 	struct bnx2x *bp = fp->bp;
 	int work_done = 0;
+	u16 rx_cons_sb;
 
 #ifdef BNX2X_STOP_ON_ERROR
 	if (unlikely(bp->panic))
@@ -9265,10 +9267,16 @@ static int bnx2x_poll(struct napi_struct *napi, int budget)
 	if (BNX2X_HAS_TX_WORK(fp))
 		bnx2x_tx_int(fp, budget);
 
+	rx_cons_sb = le16_to_cpu(*fp->rx_cons_sb);
+	if ((rx_cons_sb & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT)
+		rx_cons_sb++;
 	if (BNX2X_HAS_RX_WORK(fp))
 		work_done = bnx2x_rx_int(fp, budget);
 
 	rmb(); /* BNX2X_HAS_WORK() reads the status block */
+	rx_cons_sb = le16_to_cpu(*fp->rx_cons_sb);
+	if ((rx_cons_sb & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT)
+		rx_cons_sb++;
 
 	/* must not complete if we consumed full budget */
 	if ((work_done < budget) && !BNX2X_HAS_WORK(fp)) {
@@ -9484,8 +9492,7 @@ static int bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	fp_index = (smp_processor_id() % bp->num_queues);
 	fp = &bp->fp[fp_index];
 
-	if (unlikely(bnx2x_tx_avail(bp->fp) <
-					(skb_shinfo(skb)->nr_frags + 3))) {
+	if (unlikely(bnx2x_tx_avail(fp) < (skb_shinfo(skb)->nr_frags + 3))) {
 		bp->eth_stats.driver_xoff++,
 		netif_stop_queue(dev);
 		BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
@@ -9548,7 +9555,6 @@ static int bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		tx_bd->vlan = cpu_to_le16(pkt_prod);
 
 	if (xmit_type) {
-
 		/* turn on parsing and get a BD */
 		bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
 		pbd = (void *)&fp->tx_desc_ring[bd_prod];
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index cca921e..e91bafe 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3116,14 +3116,23 @@ static ctl_table ipv4_route_table[] = {
 	{ .ctl_name = 0 }
 };
 
-static __net_initdata struct ctl_path ipv4_route_path[] = {
+static struct ctl_table empty[1];
+
+static struct ctl_table ipv4_skeleton[] =
+{
+	{ .procname = "route", .ctl_name = NET_IPV4_ROUTE,
+	  .child = ipv4_route_table},
+	{ .procname = "neigh", .ctl_name = NET_IPV4_NEIGH,
+	  .child = empty},
+	{ }
+};
+
+static __net_initdata struct ctl_path ipv4_path[] = {
 	{ .procname = "net", .ctl_name = CTL_NET, },
 	{ .procname = "ipv4", .ctl_name = NET_IPV4, },
-	{ .procname = "route", .ctl_name = NET_IPV4_ROUTE, },
 	{ },
 };
 
-
 static struct ctl_table ipv4_route_flush_table[] = {
 	{
 		.ctl_name 	= NET_IPV4_ROUTE_FLUSH,
@@ -3136,6 +3145,13 @@ static struct ctl_table ipv4_route_flush_table[] = {
 	{ .ctl_name = 0 },
 };
 
+static __net_initdata struct ctl_path ipv4_route_path[] = {
+	{ .procname = "net", .ctl_name = CTL_NET, },
+	{ .procname = "ipv4", .ctl_name = NET_IPV4, },
+	{ .procname = "route", .ctl_name = NET_IPV4_ROUTE, },
+	{ },
+};
+
 static __net_init int sysctl_route_net_init(struct net *net)
 {
 	struct ctl_table *tbl;
@@ -3287,7 +3303,7 @@ int __init ip_rt_init(void)
  */
 void __init ip_static_sysctl_init(void)
 {
-	register_sysctl_paths(ipv4_route_path, ipv4_route_table);
+	register_sysctl_paths(ipv4_path, ipv4_skeleton);
 }
 #endif
 
diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
index e6dfaea..587f8f6 100644
--- a/net/ipv6/sysctl_net_ipv6.c
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -156,7 +156,7 @@ static struct ctl_table_header *ip6_base;
 int ipv6_static_sysctl_register(void)
 {
 	static struct ctl_table empty[1];
-	ip6_base = register_net_sysctl_rotable(net_ipv6_ctl_path, empty);
+	ip6_base = register_sysctl_paths(net_ipv6_ctl_path, empty);
 	if (ip6_base == NULL)
 		return -ENOMEM;
 	return 0;
diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 675a5c3..1fcb4cf 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -80,6 +80,10 @@ static struct sctp_auth_bytes *sctp_auth_create_key(__u32 key_len, gfp_t gfp)
 {
 	struct sctp_auth_bytes *key;
 
+	/* Verify that we are not going to overflow INT_MAX */
+	if ((INT_MAX - key_len) < sizeof(struct sctp_auth_bytes))
+		return NULL;
+
 	/* Allocate the shared key */
 	key = kmalloc(sizeof(struct sctp_auth_bytes) + key_len, gfp);
 	if (!key)
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index bb5c9ef..afa952e 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -3144,6 +3144,11 @@ static int sctp_setsockopt_auth_key(struct sock *sk,
 		goto out;
 	}
 
+	if (authkey->sca_keylength > optlen) {
+		ret = -EINVAL;
+		goto out;
+	}
+
 	asoc = sctp_id2assoc(sk, authkey->sca_assoc_id);
 	if (!asoc && authkey->sca_assoc_id && sctp_style(sk, UDP)) {
 		ret = -EINVAL;