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R. Silva" , brcm80211@lists.linux.dev (open list:BROADCOM BRCM80211 IEEE802.11 WIRELESS DRIVERS), brcm80211-dev-list.pdl@broadcom.com (open list:BROADCOM BRCM80211 IEEE802.11 WIRELESS DRIVERS), linux-kernel@vger.kernel.org (open list), linux-hardening@vger.kernel.org (open list:KERNEL HARDENING (not covered by other areas):Keyword:\b__counted_by(_le|_be|_ptr)?\b) Subject: [PATCH wireless-next] wifi: brcmfmac: flowring: simplify flow allocation Date: Sun, 7 Jun 2026 22:11:02 -0700 Message-ID: <20260608051102.6698-1-rosenp@gmail.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Use a flexible array member and kzalloc_flex to combine allocations. Simplifies code slightly. Add __counted_by for extra runtime analysis. Signed-off-by: Rosen Penev --- .../wireless/broadcom/brcm80211/brcmfmac/flowring.c | 10 ++-------- .../wireless/broadcom/brcm80211/brcmfmac/flowring.h | 2 +- 2 files changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/flowring.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/flowring.c index df7e3bee19f2..35cbcea0abc9 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/flowring.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/flowring.c @@ -360,20 +360,15 @@ struct brcmf_flowring *brcmf_flowring_attach(struct device *dev, u16 nrofrings) struct brcmf_flowring *flow; u32 i; - flow = kzalloc_obj(*flow); + flow = kzalloc_flex(*flow, rings, nrofrings); if (flow) { - flow->dev = dev; flow->nrofrings = nrofrings; + flow->dev = dev; spin_lock_init(&flow->block_lock); for (i = 0; i < ARRAY_SIZE(flow->addr_mode); i++) flow->addr_mode[i] = ADDR_INDIRECT; for (i = 0; i < ARRAY_SIZE(flow->hash); i++) flow->hash[i].ifidx = BRCMF_FLOWRING_INVALID_IFIDX; - flow->rings = kzalloc_objs(*flow->rings, nrofrings); - if (!flow->rings) { - kfree(flow); - flow = NULL; - } } return flow; @@ -399,7 +394,6 @@ void brcmf_flowring_detach(struct brcmf_flowring *flow) search = search->next; kfree(remove); } - kfree(flow->rings); kfree(flow); } diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/flowring.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/flowring.h index 818882b0fd01..f3d511f9a3c9 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/flowring.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/flowring.h @@ -38,12 +38,12 @@ struct brcmf_flowring_tdls_entry { struct brcmf_flowring { struct device *dev; struct brcmf_flowring_hash hash[BRCMF_FLOWRING_HASHSIZE]; - struct brcmf_flowring_ring **rings; spinlock_t block_lock; enum proto_addr_mode addr_mode[BRCMF_MAX_IFS]; u16 nrofrings; bool tdls_active; struct brcmf_flowring_tdls_entry *tdls_entry; + struct brcmf_flowring_ring *rings[] __counted_by(nrofrings); }; -- 2.54.0