diff options
Diffstat (limited to 'package/ifxmips-atm/src/skb.c')
-rw-r--r-- | package/ifxmips-atm/src/skb.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/package/ifxmips-atm/src/skb.c b/package/ifxmips-atm/src/skb.c deleted file mode 100644 index 7ad60fd757..0000000000 --- a/package/ifxmips-atm/src/skb.c +++ /dev/null @@ -1,128 +0,0 @@ -#include <linux/skbuff.h> - -#include "common.h" - -void resize_skb_rx(struct sk_buff *skb, unsigned int size, int is_cell) -{ - if((u32)skb < 0x80000000) - { - int key = 0; - printk("resize_skb_rx problem: skb = %08X, size = %d, is_cell = %d\n", (u32)skb, size, is_cell); - while(!key){} - } - skb->data = (unsigned char*)(((u32)skb->head + 16 + (DMA_ALIGNMENT - 1)) & ~(DMA_ALIGNMENT - 1)); - skb->tail = skb->data; - - /* Set up other state */ - skb->len = 0; - skb->cloned = 0; -#if defined(CONFIG_IMQ) || defined (CONFIG_IMQ_MODULE) - skb->imq_flags = 0; - skb->nf_info = NULL; -#endif - skb->data_len = 0; -} - -struct sk_buff* alloc_skb_rx(void) -{ - struct sk_buff *skb; - - /* allocate memroy including trailer and padding */ - skb = dev_alloc_skb(ppe_dev.aal5.rx_buffer_size + DMA_ALIGNMENT); - if (skb) - { - /* must be burst length alignment */ - if ( ((u32)skb->data & (DMA_ALIGNMENT - 1)) != 0 ) - skb_reserve(skb, ~((u32)skb->data + (DMA_ALIGNMENT - 1)) & (DMA_ALIGNMENT - 1)); - /* put skb in reserved area "skb->data - 4" */ - *((u32*)skb->data - 1) = (u32)skb; - /* invalidate cache */ - dma_cache_inv((unsigned long)skb->head, (u32)skb->end - (u32)skb->head); - } - return skb; -} - -void atm_free_tx_skb_vcc(struct sk_buff *skb) -{ - struct atm_vcc* vcc; - - if ( (u32)skb <= 0x80000000 ) - { - volatile int key = 0; - printk("atm_free_tx_skb_vcc: skb = %08X\n", (u32)skb); - for ( ; !key; ); - } - - vcc = ATM_SKB(skb)->vcc; - if ( vcc != NULL && vcc->pop != NULL ) - { - if ( atomic_read(&skb->users) == 0 ) - { - volatile int key = 0; - printk("atm_free_tx_skb_vcc(vcc->pop): skb->users == 0, skb = %08X\n", (u32)skb); - for ( ; !key; ); - } - vcc->pop(vcc, skb); - } - else - { - if ( atomic_read(&skb->users) == 0 ) - { - volatile int key = 0; - printk("atm_free_tx_skb_vcc(dev_kfree_skb_any): skb->users == 0, skb = %08X\n", (u32)skb); - for ( ; !key; ); - } - dev_kfree_skb_any(skb); - } -} - -struct sk_buff* alloc_skb_tx(unsigned int size) -{ - struct sk_buff *skb; - - /* allocate memory including header and padding */ - size += TX_INBAND_HEADER_LENGTH + MAX_TX_PACKET_ALIGN_BYTES + MAX_TX_PACKET_PADDING_BYTES; - size &= ~(DMA_ALIGNMENT - 1); - skb = dev_alloc_skb(size + DMA_ALIGNMENT); - /* must be burst length alignment */ - if ( skb ) - skb_reserve(skb, (~((u32)skb->data + (DMA_ALIGNMENT - 1)) & (DMA_ALIGNMENT - 1)) + TX_INBAND_HEADER_LENGTH); - return skb; -} - -struct sk_buff* atm_alloc_tx(struct atm_vcc *vcc, unsigned int size) -{ - int conn; - struct sk_buff *skb; - - /* oversize packet */ - if ( ((size + TX_INBAND_HEADER_LENGTH + MAX_TX_PACKET_ALIGN_BYTES + MAX_TX_PACKET_PADDING_BYTES) & ~(DMA_ALIGNMENT - 1)) > ppe_dev.aal5.tx_max_packet_size ) - { - printk("atm_alloc_tx: oversize packet\n"); - return NULL; - } - /* send buffer overflow */ - if ( atomic_read(&vcc->sk.sk_wmem_alloc) && !atm_may_send(vcc, size) ) - { - printk("atm_alloc_tx: send buffer overflow\n"); - return NULL; - } - conn = find_vcc(vcc); - if ( conn < 0 ) - { - printk("atm_alloc_tx: unknown VCC\n"); - return NULL; - } - - skb = dev_alloc_skb(size); - if ( skb == NULL ) - { - printk("atm_alloc_tx: sk buffer is used up\n"); - return NULL; - } -#define ATM_PDU_OVHD 0 - atomic_add(skb->truesize + ATM_PDU_OVHD, &vcc->sk.sk_wmem_alloc); - - return skb; -} - |