/* * linux/fs/ufs/util.c * * Copyright (C) 1998 * Daniel Pirkl * Charles University, Faculty of Mathematics and Physics */ #include #include #include #include "ufs_fs.h" #include "ufs.h" #include "swab.h" #include "util.h" struct ufs_buffer_head * _ubh_bread_ (struct ufs_sb_private_info * uspi, struct super_block *sb, u64 fragment, u64 size) { struct ufs_buffer_head * ubh; unsigned i, j ; u64 count = 0; if (size & ~uspi->s_fmask) return NULL; count = size >> uspi->s_fshift; if (count > UFS_MAXFRAG) return NULL; ubh = kmalloc (sizeof (struct ufs_buffer_head), GFP_NOFS); if (!ubh) return NULL; ubh->fragment = fragment; ubh->count = count; for (i = 0; i < count; i++) if (!(ubh->bh[i] = sb_bread(sb, fragment + i))) goto failed; for (; i < UFS_MAXFRAG; i++) ubh->bh[i] = NULL; return ubh; failed: for (j = 0; j < i; j++) brelse (ubh->bh[j]); kfree(ubh); return NULL; } struct ufs_buffer_head * ubh_bread_uspi (struct ufs_sb_private_info * uspi, struct super_block *sb, u64 fragment, u64 size) { unsigned i, j; u64 count = 0; if (size & ~uspi->s_fmask) return NULL; count = size >> uspi->s_fshift; if (count <= 0 || count > UFS_MAXFRAG) return NULL; USPI_UBH(uspi)->fragment = fragment; USPI_UBH(uspi)->count = count; for (i = 0; i < count; i++) if (!(USPI_UBH(uspi)->bh[i] = sb_bread(sb, fragment + i))) goto failed; for (; i < UFS_MAXFRAG; i++) USPI_UBH(uspi)->bh[i] = NULL; return USPI_UBH(uspi); failed: for (j = 0; j < i; j++) brelse (USPI_UBH(uspi)->bh[j]); return NULL; } void ubh_brelse (struct ufs_buffer_head * ubh) { unsigned i; if (!ubh) return; for (i = 0; i < ubh->count; i++) brelse (ubh->bh[i]); kfree (ubh); } void ubh_brelse_uspi (struct ufs_sb_private_info * uspi) { unsigned i; if (!USPI_UBH(uspi)) return; for ( i = 0; i < USPI_UBH(uspi)->count; i++ ) { brelse (USPI_UBH(uspi)->bh[i]); USPI_UBH(uspi)->bh[i] = NULL; } } void ubh_mark_buffer_dirty (struct ufs_buffer_head * ubh) { unsigned i; if (!ubh) return; for ( i = 0; i < ubh->count; i++ ) mark_buffer_dirty (ubh->bh[i]); } void ubh_mark_buffer_uptodate (struct ufs_buffer_head * ubh, int flag) { unsigned i; if (!ubh) return; if (flag) { for ( i = 0; i < ubh->count; i++ ) set_buffer_uptodate (ubh->bh[i]); } else { for ( i = 0; i < ubh->count; i++ ) clear_buffer_uptodate (ubh->bh[i]); } } void ubh_sync_block(struct ufs_buffer_head *ubh) { if (ubh) { unsigned i; for (i = 0; i < ubh->count; i++) write_dirty_buffer(ubh->bh[i], 0); for (i = 0; i < ubh->count; i++) wait_on_buffer(ubh->bh[i]); } } void ubh_bforget (struct ufs_buffer_head * ubh) { unsigned i; if (!ubh) return; for ( i = 0; i < ubh->count; i++ ) if ( ubh->bh[i] ) bforget (ubh->bh[i]); } int ubh_buffer_dirty (struct ufs_buffer_head * ubh) { unsigned i; unsigned result = 0; if (!ubh) return 0; for ( i = 0; i < ubh->count; i++ ) result |= buffer_dirty(ubh->bh[i]); return result; } void _ubh_ubhcpymem_(struct ufs_sb_private_info * uspi, unsigned char * mem, struct ufs_buffer_head * ubh, unsigned size) { unsigned len, bhno; if (size > (ubh->count << uspi->s_fshift)) size = ubh->count << uspi->s_fshift; bhno = 0; while (size) { len = min_t(unsigned int, size, uspi->s_fsize); memcpy (mem, ubh->bh[bhno]->b_data, len); mem += uspi->s_fsize; size -= len; bhno++; } } void _ubh_memcpyubh_(struct ufs_sb_private_info * uspi, struct ufs_buffer_head * ubh, unsigned char * mem, unsigned size) { unsigned len, bhno; if (size > (ubh->count << uspi->s_fshift)) size = ubh->count << uspi->s_fshift; bhno = 0; while (size) { len = min_t(unsigned int, size, uspi->s_fsize); memcpy (ubh->bh[bhno]->b_data, mem, len); mem += uspi->s_fsize; size -= len; bhno++; } } dev_t ufs_get_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi) { __u32 fs32; dev_t dev; if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86) fs32 = fs32_to_cpu(sb, ufsi->i_u1.i_data[1]); else fs32 = fs32_to_cpu(sb, ufsi->i_u1.i_data[0]); switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) { case UFS_ST_SUNx86: case UFS_ST_SUN: if ((fs32 & 0xffff0000) == 0 || (fs32 & 0xffff0000) == 0xffff0000) dev = old_decode_dev(fs32 & 0x7fff); else dev = MKDEV(sysv_major(fs32), sysv_minor(fs32)); break; default: dev = old_decode_dev(fs32); break; } return dev; } void ufs_set_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi, dev_t dev) { __u32 fs32; switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) { case UFS_ST_SUNx86: case UFS_ST_SUN: fs32 = sysv_encode_dev(dev); if ((fs32 & 0xffff8000) == 0) { fs32 = old_encode_dev(dev); } break; default: fs32 = old_encode_dev(dev); break; } if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86) ufsi->i_u1.i_data[1] = cpu_to_fs32(sb, fs32); else ufsi->i_u1.i_data[0] = cpu_to_fs32(sb, fs32); } /** * ufs_get_locked_page() - locate, pin and lock a pagecache page, if not exist * read it from disk. * @mapping: the address_space to search * @index: the page index * * Locates the desired pagecache page, if not exist we'll read it, * locks it, increments its reference * count and returns its address. * */ struct page *ufs_get_locked_page(struct address_space *mapping, pgoff_t index) { struct page *page; page = find_lock_page(mapping, index); if (!page) { page = read_mapping_page(mapping, index, NULL); if (IS_ERR(page)) { printk(KERN_ERR "ufs_change_blocknr: " "read_mapping_page error: ino %lu, index: %lu\n", mapping->host->i_ino, index); goto out; } lock_page(page); if (unlikely(page->mapping == NULL)) { /* Truncate got there first */ unlock_page(page); put_page(page); page = NULL; goto out; } if (!PageUptodate(page) || PageError(page)) { unlock_page(page); put_page(page); printk(KERN_ERR "ufs_change_blocknr: " "can not read page: ino %lu, index: %lu\n", mapping->host->i_ino, index); page = ERR_PTR(-EIO); } } out: return page; } Build?h=nds-private-remove&id=4be9993493bc7ee3fdf950a83bc050a3e6cf2a45'>4be9993493bc7ee3fdf950a83bc050a3e6cf2a45 (diff)parentec960de61503ef349588dccfa3ae02efabcc2762 (diff)
Merge branch 'dsa-port-mirroring'
Florian Fainelli says: ==================== net: dsa: Port mirroring support This patch series adds support for port mirroring in the two Broadcom switch drivers. The major part of the functional are actually with the plumbing between tc and the drivers. Changes in v5: - Added Jiri's Reviewed-by tag to first patch - rebase against latest net-next/master after bcm_sf2 CFP series Changes in v4: - rebased against latest net-next/master after Vivien's changes Changes in v3: - removed multiline comments from added structures - simplify error handling in dsa_slave_add_cls_matchall Changes in v2: - fixed filter removal logic to disable the ingress or egress mirroring when there are no longer ports being monitored in ingress or egress - removed a stray list_head in dsa_port structure that is not used Tested using the two iproute2 examples: tc qdisc add dev eth1 handle ffff: ingress tc filter add dev eth1 parent ffff: \ matchall skip_sw \ action mirred egress mirror \ dev eth2 tc qdisc add dev eth1 handle 1: root prio tc filter add dev eth1 parent 1: \ matchall skip_sw \ action mirred egress mirror \ dev eth2 ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/tests/Build')