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| author | Radoslaw Biernacki <rad@semihalf.com> | 2022-02-01 23:10:33 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2022-03-04 18:10:49 +0300 |
| commit | c2b2a1a77f6b2694b7249073083ad6a0c918eef3 (patch) | |
| tree | f2158c122773f40045ba07d9525aea3b81a81208 /net/bluetooth/eir.h | |
| parent | ba17bb62ce415950753c19d16bb43b2bd3701158 (diff) | |
| download | linux-c2b2a1a77f6b2694b7249073083ad6a0c918eef3.tar.xz | |
Bluetooth: Improve skb handling in mgmt_device_connected()
This patch introduce eir_skb_put_data() that can be used to simplify
operations on eir in goal of eliminating the necessity of intermediary
buffers.
eir_skb_put_data() is in pair to what eir_append_data() does with help of
eir_len, but without awkwardness when passing return value to skb_put() (as
it returns updated offset not size).
Signed-off-by: Radoslaw Biernacki <rad@semihalf.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'net/bluetooth/eir.h')
| -rw-r--r-- | net/bluetooth/eir.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/net/bluetooth/eir.h b/net/bluetooth/eir.h index e5876751f07e..43f1945bffc5 100644 --- a/net/bluetooth/eir.h +++ b/net/bluetooth/eir.h @@ -41,6 +41,21 @@ static inline u16 eir_append_le16(u8 *eir, u16 eir_len, u8 type, u16 data) return eir_len; } +static inline u16 eir_skb_put_data(struct sk_buff *skb, u8 type, u8 *data, u8 data_len) +{ + u8 *eir; + u16 eir_len; + + eir_len = eir_precalc_len(data_len); + eir = skb_put(skb, eir_len); + WARN_ON(sizeof(type) + data_len > U8_MAX); + eir[0] = sizeof(type) + data_len; + eir[1] = type; + memcpy(&eir[2], data, data_len); + + return eir_len; +} + static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type, size_t *data_len) { |