| /* |
| * Definitions for TCP DDP. |
| * |
| * Copyright (C) 20062009 Chelsio Communications. All rights reserved. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the LICENSE file included in this |
| * release for licensing terms and conditions. |
| */ |
| |
| #ifndef T3_DDP_H |
| #define T3_DDP_H |
| |
| #include "t3_cpl.h" |
| #include "t3_ddp_state.h" |
| #include "cpl_io_state.h" |
| |
| /* |
| * Returns 1 if a UBUF DMA buffer might be active. |
| */ |
| static inline int t3_ddp_ubuf_pending(struct sock *sk) |
| { |
| struct ddp_state *p = DDP_STATE(sk); |
| |
| /* When the TOM_TUNABLE(ddp) is enabled, we're always in ULP_MODE DDP, |
| * but DDP_STATE() is only valid if the connection actually enabled |
| * DDP. |
| */ |
| if (!p->ddp_setup) |
| return 0; |
| |
| return (p->buf_state[0].flags & (DDP_BF_NOFLIP | DDP_BF_NOCOPY)) || |
| (p->buf_state[1].flags & (DDP_BF_NOFLIP | DDP_BF_NOCOPY)); |
| } |
| |
| int t3_setup_ppods(struct sock *sk, const struct ddp_gather_list *gl, |
| unsigned int nppods, unsigned int tag, unsigned int maxoff, |
| unsigned int pg_off, unsigned int color); |
| int t3_alloc_ppods(struct tom_data *td, unsigned int n); |
| void t3_free_ppods(struct tom_data *td, unsigned int tag, unsigned int n); |
| void t3_free_ddp_gl(struct pci_dev *pdev, struct ddp_gather_list *gl); |
| int t3_pin_pages(struct pci_dev *pdev, unsigned long uaddr, size_t len, |
| struct ddp_gather_list **newgl, |
| const struct ddp_gather_list *gl); |
| int t3_map_pages(struct pci_dev *pdev, unsigned long uaddr, size_t len, |
| struct ddp_gather_list **newgl, |
| const struct ddp_gather_list *gl); |
| int t3_ddp_copy(const struct sk_buff *skb, int offset, struct iovec *to, |
| int len); |
| //void t3_repost_kbuf(struct sock *sk, int modulate, int activate, int nonblock); |
| void t3_post_kbuf(struct sock *sk, int modulate, int nonblock); |
| int t3_post_ubuf(struct sock *sk, const struct iovec *iov, int nonblock, |
| int rcv_flags, int modulate, int post_kbuf); |
| void t3_cancel_ubuf(struct sock *sk, long *timeo); |
| int t3_overlay_ubuf(struct sock *sk, const struct iovec *iov, int nonblock, |
| int rcv_flags, int modulate, int post_kbuf); |
| int t3_enter_ddp(struct sock *sk, unsigned int kbuf_size, unsigned int waitall, int nonblock); |
| void t3_cleanup_ddp(struct sock *sk); |
| void t3_release_ddp_resources(struct sock *sk); |
| void t3_cancel_ddpbuf(struct sock *sk, unsigned int bufidx); |
| void t3_overlay_ddpbuf(struct sock *sk, unsigned int bufidx, unsigned int tag0, |
| unsigned int tag1, unsigned int len); |
| void t3_setup_ddpbufs(struct sock *sk, unsigned int len0, unsigned int offset0, |
| unsigned int len1, unsigned int offset1, |
| u64 ddp_flags, u64 flag_mask, int modulate); |
| #endif /* T3_DDP_H */ |
