myri10ge: workaround buggy adopted firmwares

Work around a bug which occurs when adopting firmware versions
1.4.4 though 1.4.11 where broadcasts are filtered as if they
were multicasts.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 23 insertions, 4 deletions

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index 030924fb1ab3..954842e85ab9 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -195,6 +195,10 @@ struct myri10ge_priv {
         char *fw_name;
         char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE];
         char fw_version[128];
+        int fw_ver_major;
+        int fw_ver_minor;
+        int fw_ver_tiny;
+        int adopted_rx_filter_bug;
         u8 mac_addr[6];         /* eeprom mac address */
         unsigned long serial_number;
         int vendor_specific_offset;
@@ -447,7 +451,6 @@ myri10ge_validate_firmware(struct myri10ge_priv *mgp,
                            struct mcp_gen_header *hdr)
 {
         struct device *dev = &mgp->pdev->dev;
-        int major, minor;
 
         /* check firmware type */
         if (ntohl(hdr->mcp_type) != MCP_TYPE_ETH) {
@@ -458,9 +461,11 @@ myri10ge_validate_firmware(struct myri10ge_priv *mgp,
         /* save firmware version for ethtool */
         strncpy(mgp->fw_version, hdr->version, sizeof(mgp->fw_version));
 
-        sscanf(mgp->fw_version, "%d.%d", &major, &minor);
+        sscanf(mgp->fw_version, "%d.%d.%d", &mgp->fw_ver_major,
+               &mgp->fw_ver_minor, &mgp->fw_ver_tiny);
 
-        if (!(major == MXGEFW_VERSION_MAJOR && minor == MXGEFW_VERSION_MINOR)) {
+        if (!(mgp->fw_ver_major == MXGEFW_VERSION_MAJOR
+              && mgp->fw_ver_minor == MXGEFW_VERSION_MINOR)) {
                 dev_err(dev, "Found firmware version %s\n", mgp->fw_version);
                 dev_err(dev, "Driver needs %d.%d\n", MXGEFW_VERSION_MAJOR,
                         MXGEFW_VERSION_MINOR);
@@ -561,6 +566,18 @@ static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp)
         memcpy_fromio(hdr, mgp->sram + hdr_offset, bytes);
         status = myri10ge_validate_firmware(mgp, hdr);
         kfree(hdr);
+
+        /* check to see if adopted firmware has bug where adopting
+         * it will cause broadcasts to be filtered unless the NIC
+         * is kept in ALLMULTI mode */
+        if (mgp->fw_ver_major == 1 && mgp->fw_ver_minor == 4 &&
+            mgp->fw_ver_tiny >= 4 && mgp->fw_ver_tiny <= 11) {
+                mgp->adopted_rx_filter_bug = 1;
+                dev_warn(dev, "Adopting fw %d.%d.%d: "
+                         "working around rx filter bug\n",
+                         mgp->fw_ver_major, mgp->fw_ver_minor,
+                         mgp->fw_ver_tiny);
+        }
         return status;
 }
 
@@ -794,6 +811,8 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
         status = myri10ge_update_mac_address(mgp, mgp->dev->dev_addr);
         myri10ge_change_promisc(mgp, 0, 0);
         myri10ge_change_pause(mgp, mgp->pause);
+        if (mgp->adopted_rx_filter_bug)
+                (void)myri10ge_send_cmd(mgp, MXGEFW_ENABLE_ALLMULTI, &cmd, 1);
         return status;
 }
 
@@ -2239,7 +2258,7 @@ static void myri10ge_set_multicast_list(struct net_device *dev)
         myri10ge_change_promisc(mgp, dev->flags & IFF_PROMISC, 1);
 
         /* This firmware is known to not support multicast */
-        if (!mgp->fw_multicast_support)
+        if (!mgp->fw_multicast_support || mgp->adopted_rx_filter_bug)
                 return;
 
         /* Disable multicast filtering */