From c7a2636889a649985e323de23fe495608b6fe483 Mon Sep 17 00:00:00 2001 From: Zhenlei Huang Date: Sat, 12 Oct 2024 21:56:56 +0800 Subject: [PATCH] axgbe: Fix setting promisc mode Ethernet drivers should respect IFF_PROMISC rather than IFF_PPROMISC. The latter is for user-requested promisc mode, it implies the former but not vice versa. Some in-kernel components such as if_bridge(4) and bpf(4) will set promisc mode for interfaces on-demand. While here, update the debugging message to be not confusing. This was spotted while reviewing markj@ 's work D46524. Test from Franco shows that the interface seems to be unconditionally initialized to promisc mode regardless of this fix. That needs further investigation. Reviewed by: markj, Franco Fichtner Tested by: Franco Fichtner MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D46794 --- sys/dev/axgbe/if_axgbe_pci.c | 10 ++++++---- sys/dev/axgbe/xgbe-dev.c | 2 +- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/sys/dev/axgbe/if_axgbe_pci.c b/sys/dev/axgbe/if_axgbe_pci.c index d3078a1c33c1..290156ff11ca 100644 --- a/sys/dev/axgbe/if_axgbe_pci.c +++ b/sys/dev/axgbe/if_axgbe_pci.c @@ -2363,11 +2363,11 @@ axgbe_if_promisc_set(if_ctx_t ctx, int flags) axgbe_printf(1, "%s: MAC_PFR 0x%x drv_flags 0x%x if_flags 0x%x\n", __func__, XGMAC_IOREAD(pdata, MAC_PFR), if_getdrvflags(ifp), - if_getflags(ifp)); + flags); - if (if_getflags(ifp) & IFF_PPROMISC) { + if (flags & IFF_PROMISC) { - axgbe_printf(1, "User requested to enter promisc mode\n"); + axgbe_printf(1, "Requested to enter promisc mode\n"); if (XGMAC_IOREAD_BITS(pdata, MAC_PFR, PR) == 1) { axgbe_printf(1, "Already in promisc mode\n"); @@ -2376,10 +2376,11 @@ axgbe_if_promisc_set(if_ctx_t ctx, int flags) axgbe_printf(1, "Entering promisc mode\n"); XGMAC_IOWRITE_BITS(pdata, MAC_PFR, PR, 1); + /* Disable VLAN filtering */ XGMAC_IOWRITE_BITS(pdata, MAC_PFR, VTFE, 0); } else { - axgbe_printf(1, "User requested to leave promisc mode\n"); + axgbe_printf(1, "Requested to leave promisc mode\n"); if (XGMAC_IOREAD_BITS(pdata, MAC_PFR, PR) == 0) { axgbe_printf(1, "Already not in promisc mode\n"); @@ -2388,6 +2389,7 @@ axgbe_if_promisc_set(if_ctx_t ctx, int flags) axgbe_printf(1, "Leaving promisc mode\n"); XGMAC_IOWRITE_BITS(pdata, MAC_PFR, PR, 0); + /* Enable VLAN filtering */ XGMAC_IOWRITE_BITS(pdata, MAC_PFR, VTFE, 1); } diff --git a/sys/dev/axgbe/xgbe-dev.c b/sys/dev/axgbe/xgbe-dev.c index 3a7d683ea5a9..48f3f2b587f0 100644 --- a/sys/dev/axgbe/xgbe-dev.c +++ b/sys/dev/axgbe/xgbe-dev.c @@ -970,7 +970,7 @@ xgbe_config_rx_mode(struct xgbe_prv_data *pdata) { unsigned int pr_mode, am_mode; - pr_mode = ((if_getflags(pdata->netdev) & IFF_PPROMISC) != 0); + pr_mode = ((if_getflags(pdata->netdev) & IFF_PROMISC) != 0); am_mode = ((if_getflags(pdata->netdev) & IFF_ALLMULTI) != 0); xgbe_set_promiscuous_mode(pdata, pr_mode);