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Wed, 26 Mar 2025 11:09:32 -0700 (PDT) From: Ramon Fontes To: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com Cc: linux-wpan@vger.kernel.org, alex.aring@gmail.com, miquel.raynal@bootlin.com, netdev@vger.kernel.org, Ramon Fontes Subject: [PATCH] mac802154_hwsim: define perm_extended_addr initialization Date: Wed, 26 Mar 2025 15:09:08 -0300 Message-ID: <20250326180909.10406-1-ramonreisfontes@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org This establishes an initialization method for perm_extended_addr, aligning it with the approach used in mac80211_hwsim. Signed-off-by: Ramon Fontes --- drivers/net/ieee802154/mac802154_hwsim.c | 18 +++++++++++++++++- drivers/net/ieee802154/mac802154_hwsim.h | 2 ++ 2 files changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/net/ieee802154/mac802154_hwsim.c b/drivers/net/ieee802154/mac802154_hwsim.c index 1cab20b5a..400cdac1f 100644 --- a/drivers/net/ieee802154/mac802154_hwsim.c +++ b/drivers/net/ieee802154/mac802154_hwsim.c @@ -41,6 +41,17 @@ enum hwsim_multicast_groups { HWSIM_MCGRP_CONFIG, }; +__le64 addr_to_le64(u8 *addr) { + return cpu_to_le64(((u64)addr[0] << 56) | + ((u64)addr[1] << 48) | + ((u64)addr[2] << 40) | + ((u64)addr[3] << 32) | + ((u64)addr[4] << 24) | + ((u64)addr[5] << 16) | + ((u64)addr[6] << 8) | + ((u64)addr[7])); +} + static const struct genl_multicast_group hwsim_mcgrps[] = { [HWSIM_MCGRP_CONFIG] = { .name = "config", }, }; @@ -896,6 +907,7 @@ static int hwsim_subscribe_all_others(struct hwsim_phy *phy) static int hwsim_add_one(struct genl_info *info, struct device *dev, bool init) { + u8 addr[8]; struct ieee802154_hw *hw; struct hwsim_phy *phy; struct hwsim_pib *pib; @@ -942,7 +954,11 @@ static int hwsim_add_one(struct genl_info *info, struct device *dev, /* 950 MHz GFSK 802.15.4d-2009 */ hw->phy->supported.channels[6] |= 0x3ffc00; - ieee802154_random_extended_addr(&hw->phy->perm_extended_addr); + memset(addr, 0, sizeof(addr)); + /* give a specific prefix to the address */ + addr[0] = 0x02; + addr[7] = idx; + hw->phy->perm_extended_addr = addr_to_le64(addr); /* hwsim phy channel 13 as default */ hw->phy->current_channel = 13; diff --git a/drivers/net/ieee802154/mac802154_hwsim.h b/drivers/net/ieee802154/mac802154_hwsim.h index 6c6e30e38..536d95eb1 100644 --- a/drivers/net/ieee802154/mac802154_hwsim.h +++ b/drivers/net/ieee802154/mac802154_hwsim.h @@ -1,6 +1,8 @@ #ifndef __MAC802154_HWSIM_H #define __MAC802154_HWSIM_H +__le64 addr_to_le64(u8 *addr); + /* mac802154 hwsim netlink commands * * @MAC802154_HWSIM_CMD_UNSPEC: unspecified command to catch error