From: Prasanna S. Panchamukhi <[email protected]> According to Intel Wimax i3200, i5x50 and i6x50 specification documents, the maximum size of each TX message can be upto 16KiB. This patch modifies the i2400m_tx() routine to check that the message size does not exceed the 16KiB limit. Please refer the documentation in the code for details.
Signed-off-by: Prasanna S. Panchamukhi <[email protected]> --- drivers/net/wimax/i2400m/tx.c | 13 ++++++++++++- 1 files changed, 12 insertions(+), 1 deletions(-) diff --git a/drivers/net/wimax/i2400m/tx.c b/drivers/net/wimax/i2400m/tx.c index b10c3b7..a5002c8 100644 --- a/drivers/net/wimax/i2400m/tx.c +++ b/drivers/net/wimax/i2400m/tx.c @@ -283,6 +283,11 @@ enum { + I2400M_TX_PLD_MAX * sizeof(struct i2400m_pld), I2400M_TX_SKIP = 0x80000000, /* + * According to Intel Wimax i3200, i5x50 and i6x50 specification + * documents, the maximum size of each message can be up to 16KiB. + */ + I2400M_TX_MSG_SIZE = 16384, + /* * 16 byte aligned MAX_MTU + 4 byte payload prefix. */ I2400M_MAX_MTU_ALIGN = 16, @@ -682,7 +687,13 @@ try_new: } if (i2400m->tx_msg == NULL) goto error_tx_new; - if (i2400m->tx_msg->size + padded_len > I2400M_TX_BUF_SIZE / 2) { + /* + * Check if this skb will fit in the TX queue's current active + * TX message. The total message size must not exceed the maximum + * size of each message I2400M_TX_MSG_SIZE. If it exceeds, + * close the current message and push this skb into the new message. + */ + if (i2400m->tx_msg->size + padded_len > I2400M_TX_MSG_SIZE) { d_printf(2, dev, "TX: message too big, going new\n"); i2400m_tx_close(i2400m); i2400m_tx_new(i2400m); -- 1.6.6.1 _______________________________________________ wimax mailing list [email protected] http://lists.linuxwimax.org/listinfo/wimax
