e1000x: Fix BPRC and MPRC

Before this change, e1000 and the common code updated BPRC and MPRC
depending on the matched filter, but e1000e and igb decided to update
those counters by deriving the packet type independently. This
inconsistency caused a multicast packet to be counted twice.

Updating BPRC and MPRC depending on are fundamentally flawed anyway as
a filter can be used for different types of packets. For example, it is
possible to filter broadcast packets with MTA.

Always determine what counters to update by inspecting the packets.

Fixes: 3b27430177 ("e1000: Implementing various counters")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit f3f9b726afba1f53663768603189e574f80b5907)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/hw/net/e1000.c b/hw/net/e1000.c
index 59bacb5d3b9f5818bdafffb62eebd520dc0c9657..18eb6d8876af1bca9073d43275f0671446e9050e 100644 (file)
--- a/hw/net/e1000.c
+++ b/hw/net/e1000.c
@@ -826,12 +826,10 @@ receive_filter(E1000State *s, const uint8_t *buf, int size)
     }
 
     if (ismcast && (rctl & E1000_RCTL_MPE)) {          /* promiscuous mcast */
-        e1000x_inc_reg_if_not_full(s->mac_reg, MPRC);
         return 1;
     }
 
     if (isbcast && (rctl & E1000_RCTL_BAM)) {          /* broadcast enabled */
-        e1000x_inc_reg_if_not_full(s->mac_reg, BPRC);
         return 1;
     }
 
@@ -922,6 +920,7 @@ e1000_receive_iov(NetClientState *nc, const struct iovec *iov, int iovcnt)
     size_t desc_offset;
     size_t desc_size;
     size_t total_size;
+    eth_pkt_types_e pkt_type;
 
     if (!e1000x_hw_rx_enabled(s->mac_reg)) {
         return -1;
@@ -971,6 +970,7 @@ e1000_receive_iov(NetClientState *nc, const struct iovec *iov, int iovcnt)
         size -= 4;
     }
 
+    pkt_type = get_eth_packet_type(PKT_GET_ETH_HDR(filter_buf));
     rdh_start = s->mac_reg[RDH];
     desc_offset = 0;
     total_size = size + e1000x_fcs_len(s->mac_reg);
@@ -1036,7 +1036,7 @@ e1000_receive_iov(NetClientState *nc, const struct iovec *iov, int iovcnt)
         }
     } while (desc_offset < total_size);
 
-    e1000x_update_rx_total_stats(s->mac_reg, size, total_size);
+    e1000x_update_rx_total_stats(s->mac_reg, pkt_type, size, total_size);
 
     n = E1000_ICS_RXT0;
     if ((rdt = s->mac_reg[RDT]) < s->mac_reg[RDH])

diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index cfa3f55e96b735bcd5385ba45bfe467384bee6bf..a74f1bc2450d90df5339660d16c74bdddb7c2a9a 100644 (file)
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -1487,24 +1487,10 @@ e1000e_write_to_rx_buffers(E1000ECore *core,
 }
 
 static void
-e1000e_update_rx_stats(E1000ECore *core,
-                       size_t data_size,
-                       size_t data_fcs_size)
+e1000e_update_rx_stats(E1000ECore *core, size_t pkt_size, size_t pkt_fcs_size)
 {
-    e1000x_update_rx_total_stats(core->mac, data_size, data_fcs_size);
-
-    switch (net_rx_pkt_get_packet_type(core->rx_pkt)) {
-    case ETH_PKT_BCAST:
-        e1000x_inc_reg_if_not_full(core->mac, BPRC);
-        break;
-
-    case ETH_PKT_MCAST:
-        e1000x_inc_reg_if_not_full(core->mac, MPRC);
-        break;
-
-    default:
-        break;
-    }
+    eth_pkt_types_e pkt_type = net_rx_pkt_get_packet_type(core->rx_pkt);
+    e1000x_update_rx_total_stats(core->mac, pkt_type, pkt_size, pkt_fcs_size);
 }
 
 static inline bool

diff --git a/hw/net/e1000x_common.c b/hw/net/e1000x_common.c
index 4c8e7dcf70c0d9d5f2020888bb272e8285d9c21f..7694673bcc3409c83b19c8365daad7f0cb0789fd 100644 (file)
--- a/hw/net/e1000x_common.c
+++ b/hw/net/e1000x_common.c
@@ -80,7 +80,6 @@ bool e1000x_rx_group_filter(uint32_t *mac, const uint8_t *buf)
     f = mta_shift[(rctl >> E1000_RCTL_MO_SHIFT) & 3];
     f = (((buf[5] << 8) | buf[4]) >> f) & 0xfff;
     if (mac[MTA + (f >> 5)] & (1 << (f & 0x1f))) {
-        e1000x_inc_reg_if_not_full(mac, MPRC);
         return true;
     }
 
@@ -212,13 +211,14 @@ e1000x_rxbufsize(uint32_t rctl)
 
 void
 e1000x_update_rx_total_stats(uint32_t *mac,
-                             size_t data_size,
-                             size_t data_fcs_size)
+                             eth_pkt_types_e pkt_type,
+                             size_t pkt_size,
+                             size_t pkt_fcs_size)
 {
     static const int PRCregs[6] = { PRC64, PRC127, PRC255, PRC511,
                                     PRC1023, PRC1522 };
 
-    e1000x_increase_size_stats(mac, PRCregs, data_fcs_size);
+    e1000x_increase_size_stats(mac, PRCregs, pkt_fcs_size);
     e1000x_inc_reg_if_not_full(mac, TPR);
     e1000x_inc_reg_if_not_full(mac, GPRC);
     /* TOR - Total Octets Received:
@@ -226,8 +226,21 @@ e1000x_update_rx_total_stats(uint32_t *mac,
     * Address> field through the <CRC> field, inclusively.
     * Always include FCS length (4) in size.
     */
-    e1000x_grow_8reg_if_not_full(mac, TORL, data_size + 4);
-    e1000x_grow_8reg_if_not_full(mac, GORCL, data_size + 4);
+    e1000x_grow_8reg_if_not_full(mac, TORL, pkt_size + 4);
+    e1000x_grow_8reg_if_not_full(mac, GORCL, pkt_size + 4);
+
+    switch (pkt_type) {
+    case ETH_PKT_BCAST:
+        e1000x_inc_reg_if_not_full(mac, BPRC);
+        break;
+
+    case ETH_PKT_MCAST:
+        e1000x_inc_reg_if_not_full(mac, MPRC);
+        break;
+
+    default:
+        break;
+    }
 }
 
 void

diff --git a/hw/net/e1000x_common.h b/hw/net/e1000x_common.h
index 911abd8a907dddeab08de9a120550f39eacfc08a..0298e06283cff686d6afd9cfe7288b56d53fe2f3 100644 (file)
--- a/hw/net/e1000x_common.h
+++ b/hw/net/e1000x_common.h
@@ -91,8 +91,9 @@ e1000x_update_regs_on_link_up(uint32_t *mac, uint16_t *phy)
 }
 
 void e1000x_update_rx_total_stats(uint32_t *mac,
-                                  size_t data_size,
-                                  size_t data_fcs_size);
+                                  eth_pkt_types_e pkt_type,
+                                  size_t pkt_size,
+                                  size_t pkt_fcs_size);
 
 void e1000x_core_prepare_eeprom(uint16_t       *eeprom,
                                 const uint16_t *templ,

diff --git a/hw/net/igb_core.c b/hw/net/igb_core.c
index 826e7a6cf10fc92c00840ad98824f32dcb3bfd02..8a9fd1f729b1ea8fef71393169a9f4c2cd99bcef 100644 (file)
--- a/hw/net/igb_core.c
+++ b/hw/net/igb_core.c
@@ -1437,29 +1437,17 @@ igb_write_to_rx_buffers(IGBCore *core,
 
 static void
 igb_update_rx_stats(IGBCore *core, const E1000E_RingInfo *rxi,
-                    size_t data_size, size_t data_fcs_size)
+                    size_t pkt_size, size_t pkt_fcs_size)
 {
-    e1000x_update_rx_total_stats(core->mac, data_size, data_fcs_size);
-
-    switch (net_rx_pkt_get_packet_type(core->rx_pkt)) {
-    case ETH_PKT_BCAST:
-        e1000x_inc_reg_if_not_full(core->mac, BPRC);
-        break;
-
-    case ETH_PKT_MCAST:
-        e1000x_inc_reg_if_not_full(core->mac, MPRC);
-        break;
-
-    default:
-        break;
-    }
+    eth_pkt_types_e pkt_type = net_rx_pkt_get_packet_type(core->rx_pkt);
+    e1000x_update_rx_total_stats(core->mac, pkt_type, pkt_size, pkt_fcs_size);
 
     if (core->mac[MRQC] & 1) {
         uint16_t pool = rxi->idx % IGB_NUM_VM_POOLS;
 
-        core->mac[PVFGORC0 + (pool * 64)] += data_size + 4;
+        core->mac[PVFGORC0 + (pool * 64)] += pkt_size + 4;
         core->mac[PVFGPRC0 + (pool * 64)]++;
-        if (net_rx_pkt_get_packet_type(core->rx_pkt) == ETH_PKT_MCAST) {
+        if (pkt_type == ETH_PKT_MCAST) {
             core->mac[PVFMPRC0 + (pool * 64)]++;
         }
     }